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Governments around the world are drawing on behavioural insights to improve public policy outcomes: from automatic enrolment for pensions, to better tax compliance, to increasing the supply of organ donation.
But those very same policy makers are also subject to biases that can distort decision making. The Behavioural Insights Team has been studying those biases and what can be done to counter them, in collaboration with Jill Rutter and Julian McCrae of the Institute for Government.
The report was launched with remarks from Alex Chisholm, Permanent Secretary at the Department for Business, Energy, and Industrial Strategy.
Dr Michael Hallsworth, Director of the Behavioural Insights Team in North America presented the key findings.
The findings, their relevance to policy making today, and what they mean for the way governments make decisions were discussed by:
Polly Mackenzie, Director of Policy for the Deputy Prime Minister, 2010–15 and now Director of Demos
Dr Tony Curzon Price, Economic Advisor to the Secretary of State for Business, Energy and Industrial Strategy.
The event was chaired by Jill Rutter, Programme Director at the Institute for Government.
#IfGBIT
Photos by Candice McKenzie
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Gordon Brown meeting residents and police officers on a North London estate where they have been working together to deal with anti-social behaviour; PA copyright
Katherine Kinzler, Associate Professor, Cornell University, USA captured during the session: Being Human: Behaviour at the World Economic Forum - Annual Meeting of the New Champions in Tianjin, People's Republic of China 2018.Copyright by World Economic Forum / Sikarin Thanachaiary
By no means a technically perfect image but it does show nicely the behaviour of Spotted Flycatchers. I think the bird being fed is actually the female and not a juv.
I wonder what moron decided that nicking this from Sainsbury's and dumping this in the River Lark was a good idea?
Governments around the world are drawing on behavioural insights to improve public policy outcomes: from automatic enrolment for pensions, to better tax compliance, to increasing the supply of organ donation.
But those very same policy makers are also subject to biases that can distort decision making. The Behavioural Insights Team has been studying those biases and what can be done to counter them, in collaboration with Jill Rutter and Julian McCrae of the Institute for Government.
The report was launched with remarks from Alex Chisholm, Permanent Secretary at the Department for Business, Energy, and Industrial Strategy.
Dr Michael Hallsworth, Director of the Behavioural Insights Team in North America presented the key findings.
The findings, their relevance to policy making today, and what they mean for the way governments make decisions were discussed by:
Polly Mackenzie, Director of Policy for the Deputy Prime Minister, 2010–15 and now Director of Demos
Dr Tony Curzon Price, Economic Advisor to the Secretary of State for Business, Energy and Industrial Strategy.
The event was chaired by Jill Rutter, Programme Director at the Institute for Government.
#IfGBIT
Photos by Candice McKenzie
Bad Behavior from Preston describe themselves as a six piece “balls to the wall” glam rock extravaganza and that pretty much sums this band up in a nutshell. The last competitive band of the competition and good lord, what a way to finish! Looking every part the Glam Rockers resplendent in their colourful outfits and make up, but it was really the front man, Phil Bailey, who not only took centre stage but looked the most avant garde a he did his level best to be the consummate front man. With three guitars on stage, the vocals were sometimes overwhelmed especially during 'Born To Party' but it was still a good performance overall. The bands cover was Alice Coopers' 'Man Behind the Mask', and although not one of the famous Cooper songs, it was nevertheless a good cover by the band. Bailey is predictably theatrical here which ties in very well with the bands image and although this is a proper band with serious musicians, there's nothing in the book saying that you can’t do it without planting your tongue firmly in your cheek! Their final number 'Apocalypse Now' was the best of the set with its great guitar riff that has the place jumping on and off stage. As the song reached its climax Bailey announced "This is the end!" and as the curtain falls on their performance, the band are greeted with generous applause as they take their final bows. What a great way to end the competition!
Participants captured during the session: Being Human: Behaviour at the World Economic Forum - Annual Meeting of the New Champions in Tianjin, People's Republic of China 2018.Copyright by World Economic Forum / Sikarin Thanachaiary
Governments around the world are drawing on behavioural insights to improve public policy outcomes: from automatic enrolment for pensions, to better tax compliance, to increasing the supply of organ donation.
But those very same policy makers are also subject to biases that can distort decision making. The Behavioural Insights Team has been studying those biases and what can be done to counter them, in collaboration with Jill Rutter and Julian McCrae of the Institute for Government.
The report was launched with remarks from Alex Chisholm, Permanent Secretary at the Department for Business, Energy, and Industrial Strategy.
Dr Michael Hallsworth, Director of the Behavioural Insights Team in North America presented the key findings.
The findings, their relevance to policy making today, and what they mean for the way governments make decisions were discussed by:
Polly Mackenzie, Director of Policy for the Deputy Prime Minister, 2010–15 and now Director of Demos
Dr Tony Curzon Price, Economic Advisor to the Secretary of State for Business, Energy and Industrial Strategy.
The event was chaired by Jill Rutter, Programme Director at the Institute for Government.
#IfGBIT
Photos by Candice McKenzie
Participants captured during the session: Being Human: Behaviour at the World Economic Forum - Annual Meeting of the New Champions in Tianjin, People's Republic of China 2018.Copyright by World Economic Forum / Sikarin Thanachaiary
I was up at one of our local churchyards for my walk this morning when I noticed this female Mallard.
She was quacking away and then flew up into a hole in a tree, if she's nesting there I worry about the babies when they hatch.
The pond is just across a fairly busy road if they try to get there.
As spotted in one of our local Morrisons. Little Thomas was desparate for a wiz, we opened the door with some trepidation, an had to fumble our way with a feckless dark blue strip light being less than useless.
I suppose, yes, one way of stopping 'unsociable behaviour' (take your pick) would be to turn all the chuffing lights out.
La relación de los rostros con el tipo de ropa es obvio. Cámara escondida (candid shot). View On Black
I was watching this young Eastern Kingbird out hunting his dinner. What he did next was something I have never seen a flycatcher do - he picked a choke cherry!
I think this is a Warbler, possibly an Audubon Warbler, getting at food on the underside of this rock formation.
No idea what is happening here ?
Two woodpeckers on the grass with one doing this wing spread and crawl along the grass ??
Interesting behaviour from some Ichneumon wasps of the Campopleginae seen on the redcurrant bush in the garden. Two were in cop when a second male flew in and wanted to take over. A tussle occurred resulting in the incomer usurping the first male. Further tussles, and then a third male arrived as seen in preceding video clip. Additional pictures below form an action sequence.
Everytime I throw some food on the ground, they pick them up, hop on the birdbath, dip it in the water to make it soft, and then eat it. It's so interesting to watch their funny behaviour like this. Because of this, the birdbath gets dirty with food quickly... I have to change water frequently..
A key milestone in the UCD Medicine academic programme, our Clinical Commencement 'White Coat' Ceremony 2018 took place on Friday 9th February 2018 at UCD O'Reilly Hall.
The Clinical Commencement Ceremony marks the transition from a predominantly preclinical medical education focus to an intensive period of clinical training. The White Coat symbolise the professional responsibilities that students will assume throughout their clinical life. During the ceremony, the students were reminded to always maintain professional attitudes and behaviours in work and in relationships with classmates, teachers, patients and the community and to commit to follow ethical and professional standards of the profession.
Participants captured during the session: Being Human: Behaviour at the World Economic Forum - Annual Meeting of the New Champions in Tianjin, People's Republic of China 2018.Copyright by World Economic Forum / Sikarin Thanachaiary
Mindless Behaviour leaving the BBC Radio 1 building in Central London earlier today. Mindless Behaviour are an American Boy Band who have toured with the likes of Janet Jackson and Justin Bieber.
Pictured: Mindless Behaviour
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She has two eggs, but seems only one chicken, last year she had two.
Red-throated Diver nesting in Porkeri Mountains
Adult in breeding plumage
Conservation status
Least Concern (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Gaviiformes
Family: Gaviidae
Genus: Gavia
Species: G. stellata
Binomial name
Gavia stellata
(Pontoppidan, 1763)
Synonyms
Colymbus stellatus Pontoppidan, 1763 Colymbus lumme Brünnich, 1764
Colymbus septentrionalis Linnaeus, 1766
Gavia lumme Forster, 1788
Colymbus mulleri Brehm, 1826
Urinator lumme Stejneger, 1882
The Red-throated Diver (Gavia stellata), known in North America as the Red-throated Loon, is a migratory aquatic bird that is found in the temperate regions of the northern hemisphere. It is the smallest and most widely distributed member of the loon or diver family.
Around 55–67 centimetres (22–26 in) in length, the Red-throated Diver is a nondescript bird in winter, greyish above fading to white below. During the breeding season, it acquires the distinctive reddish throat which gives rise to its common name. Fish form the bulk of the diet, with invertebrates and plants sometimes eaten as well. A monogamous species, the Red-throated Diver forms long-term pair bonds.
Contents [hide]
1 Taxonomy and etymology
2 Description
2.1 Voice
3 Habitat and distribution
4 Behaviour
4.1 Food and feeding
4.2 Breeding
5 Conservation status and threats
6 In human culture
7 References
7.1 Sources
8 External links
[edit] Taxonomy and etymology
First described by Danish naturalist Erik Pontoppidan in 1763, the Red-throated Diver is a monotypic species, with no distinctive subspecies despite its large Holarctic range.[2] Pontoppidan initially placed the species in the now-defunct genus Colymbus, which contained grebes as well as divers. By 1788, however, German naturalist Johann Reinhold Forster realized that grebes and divers were different enough to warrant separate genera, and moved the Red-throated Diver (along with all other diver species) to its present genus.[3] Its relationship to the four other divers is complex; though all belong to the same genus, it differs more than any of the others in terms of morphology, behaviour, ecology and breeding biology. It is thought to have evolved in the Palearctic, and then to have expanded into the Nearctic.[2]
The genus name Gavia comes from the Latin for "sea mew", as used by ancient Roman naturalist Pliny the Elder.[4] The specific epithet stellata is Latin for "set with stars" or "starry",[5] and refers to the bird's speckled back in its non-breeding plumage.[4] "Diver" refers to the family's underwater method of hunting for prey, while "red-throated" is a straightforward reference to the bird's most distinctive breeding plumage feature. The word "loon" is thought to have derived from the Swedish lom, the Old Norse or Icelandic lómr, or the Old Dutch loen, all of which mean "lame" or "clumsy", and is a probable reference to the difficulty that all divers have in moving about on land.[6]
[edit] Description
The Red-throated Diver is the smallest and lightest of the world's diver species, ranging from 55–67 centimetres (22–26 in) in length with a 91–110 centimetres (36–43 in) wingspan,[7] and averaging 1.4 kilograms (3.1 lb) in weight.[8] Like all divers, it is long-bodied and short-necked, with its legs set far back on its body.[9] The sexes are similar, although males tend to be slightly larger and heavier than females.[2] In breeding plumage, the adult has a grey head and neck (with narrow black and white stripes on the back of the neck), a triangular red throat patch, white underparts and a dark mantle. It is the only diver with an all-dark back in breeding plumage. The non-breeding plumage is drabber with the chin, foreneck and much of the face white, and considerable white speckling on the dark mantle. Its bill is thin, straight and sharp, and the bird often holds it at an uptilted angle. Though the colour of the bill changes from black in summer to pale grey in winter, the timing of the colour change does not necessarily correspond to that of the bird's overall plumage change. The nostrils are narrow slits located near the base of the bill, and the iris is reddish.
An adult in non-breeding plumage shows the speckled back which gives the bird its specific name.When it first emerges from its egg, the young Red-throated Diver is covered with fine soft down feathers. Primarily dark brown to dark grey above, it is slightly paler on the sides of its head and neck, as well as on its throat, chest, and flanks, with a pale grey lower breast and belly. Within weeks, this first down is replaced by a second, paler set of down feathers, which are in turn replaced by developing juvenile feathers.[10]
In flight, the Red-throated Diver has a distinctive profile; its small feet do not project far past the end of its body, its head and neck droop below the horizontal (giving the flying bird a distinctly hunchbacked shape) and its thin wings are angled back. It has a quicker, deeper wingbeat than do other divers.[8]
[edit] Voice
The adult Red-throated Diver has a number of vocalisations, which are used in different circumstances. In flight, when passing conspecifics or circling its own pond, it gives a series of rapid yet rhythmic goose-like cackles, at roughly five calls per second. Its warning call, if disturbed by humans or onshore predators, is a short croaking bark. A low-pitched moaning call, used primarily as a contact call between mates and between parents and young, but also during copulation, is made with the bill closed. The species also has a short wailing call, which descends slightly in pitch and lasts about a second; due to strong harmonics surrounding the primary pitch, this meowing call is more musical than its other calls. Another call—a harsh, pulsed cooing that rises and falls in pitch, and is typically repeated up to 10 times in a row—is used in territorial encounters and pair-bonding, and by parent birds encouraging their young to move on land between bodies of water.[11] Known as the "long call", it is often given in duet, which is unusual among the divers;[12] the female's contribution is longer and softer than her mate's.[11]
Young have a shrill closed-bill call, which they use in begging and to contact their parents. They also have a long call used in response to (and similar to that of) the long call of adults.[11]
[edit] Habitat and distribution
The Red-throated Diver breeds primarily in the Arctic regions of northern Eurasia and North America (generally north of 50°N latitude), and winters in northern coastal waters.[13] Unlike other divers, the Red-throated Diver regularly uses very small freshwater lakes as breeding sites.
In North America, it winters regularly along both coasts, ranging as far south as the Baja California Peninsula and the Gulf of California in northwestern Mexico; it has been recorded as a vagrant in the interior Mexican state of Hidalgo.[14] In Europe, it breeds in Iceland, northern Scotland, Scandinavia and northern Russia, and winters along the coast as far south as parts of Spain; it also regularly occurs along major inland waterways, including the Mediterranean, Aegean and Black Seas, as well as large river, lakes and reservoirs.[15] It has occurred as a vagrant as far south as Morocco, Tunisia and The Gambia.[1]
Some of its folknames in northeastern North America—including cape race, cape brace, cape drake and cape racer, as well as corruptions such as scapegrace—originated from its abundance around Cape Race, Newfoundland.[16]
[edit] Behaviour
Because its feet are located so far back on its body, the Red-throated Diver is not capable of walking on land; however, it can use its feet to shove itself forward on its breast.[8] Young use this method of covering ground when moving from their breeding pools to larger bodies of water, including rivers and the sea.[17] It is the only species of diver able to take off directly from land.[18]
The Red-throated Diver is a diurnal migrant, which travels singly or in loose groups, often high above the water.[8] In eastern North America (and possibly elsewhere), it tends to migrate near the coast rather than farther offshore.[19] It is a strong flier, and has been clocked at speeds between 75 and 78 kilometres per hour (47–49 mph).[20] Like all members of its family, the Red-throated Diver goes through a simultaneous wing moult, losing all its flight feathers at once and becoming flightless for a period of 3–4 weeks. However, unlike other divers—which undergo this moult in late winter—the Red-throated Diver loses its ability to fly sometime between early August and November.[21]
[edit] Food and feeding
Like all members of its family, the Red-throated Diver is primarily a fish-eater, though it sometimes feeds on molluscs, crustaceans, frogs, aquatic invertebrates, insects, fish spawn or even plant material.[22] It seizes rather than spears its prey, which is generally captured underwater.[23] Though it normally dives and swims using only its feet for propulsion, it may use its wings as well if it needs to turn or accelerate quickly.[24] Pursuit dives range from 2–9 metres (6.6–30 ft) in depth, with an average underwater time of about a minute.[22] The fish diet of the Red-throated Diver has led to several of its folknames, including "sprat borer" and "spratoon".[25]
Chicks are competent swimmers, able to accompany their parents soon after hatching.For the first few days after hatching, young Red-throated Divers are fed aquatic insects and small crustaceans by both parents. After 3–4 days, the parents switch to fish small enough for the young birds to swallow whole. By four weeks of age, the young can eat the same food—of the same size—as their parents do.[26] Young birds may be fed for some time after fledging; adults have been seen feeding fish to juveniles at sea and on inland lakes in the United Kingdom, hundreds of kilometers from any breeding areas.[27][28]
[edit] Breeding
The Red-throated Diver is a monogamous species which forms long-term pair bonds. Both sexes build the nest, which is a shallow scrape (or occasionally a platform of mud and vegetation) lined with vegetation and sometimes a few feathers, and placed within a half-metre (18 in) of the edge of a small pond. The female lays two eggs (though clutches of 1–3 have been recorded); they are incubated for 24–29 days, primarily by the female. The eggs, which are greenish or olive-brownish spotted with black, measure 75 x 46 millimetres (3.0 x 1.8 in) and have a mass of 83 grams (2.9 oz), of which 8 percent is shell.[23][29] Incubation is begun as soon as the first egg is laid, so they hatch asynchronously. The young birds are precocial upon hatching: downy and mobile with open eyes; both parents feed them (small aquatic invertebrates initially, then small fish) for 38–48 days. Parents will perform distraction displays to lure predators away from the nest and young.[23] Ornithologists disagree as to whether adults carry young on their backs while swimming with some maintaining that they do[23] and others the opposite.[30]
[edit] Conservation status and threats
JuvenileThough the Red-throated Diver is not a globally threatened species, as it has a large population and a significant range, there are populations which appear to be declining. Numbers counted in U.S. Fish and Wildlife Service surveys in Alaska show a 53 percent population decline between 1971 and 1993, for example,[31] and counts have dropped in continental Europe as well.[32] In Scotland, on the other hand, the population increased by some 16 percent between 1994 and 2006, according to surveys done by the Royal Society for the Protection of Birds and Scottish Natural Heritage.[32] In 2002, Wetlands International estimated a global population of 490,000 to 1,500,000 individuals; global population trends haven't been quantified.[1]
The Red-throated Diver is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies;[33] in the Americas, it is protected by the Migratory Bird Treaty Act of 1918.[34] Oil spills, habitat degradation, and fishing nets are among the main threats this species faces.[30] In addition, high levels of mercury in the environment have led to reproductive failures in some areas, including parts of Sweden.[35] On the breeding grounds, Arctic and Red Foxes are major predators of eggs,[36] while Great Skuas, Arctic Skuas and various species of Larus gulls (including Great Black-backed Gulls and Glaucous Gulls)[37][38] are predators of both eggs and young.[39]
[edit] In human culture
Used as a food source since prehistoric times,[40][41] the Red-throated Diver is still hunted by indigenous peoples in some parts of the world today.[42] Eggs as well as birds are taken, sometimes in significant numbers; during one study on northern Canada's Igloolik Island, 73% of all Red-throated Diver eggs laid within the 10 km2 (3.9 mi2) study site over two breeding seasons were collected by indigenous inhabitants of the island.[43] In some parts of Russia, Red-throated Diver skins were traditionally used to make caps, collars and other clothing trim.[44] The species was also central to the creation mythologies of indigenous groups throughout the Holarctic.[45] According to the myth—which varies only slightly between versions, despite the sometimes-vast distances that separated the groups who believed it—the diver was asked by a great shaman to bring up earth from the bottom of the sea. That earth was then used to build the world's dry land.[45][46]
As recently as the 1800s, the Red-throated Diver was thought to be a foreteller of storms; according to the conventional wisdom of the time, birds flying inland or giving short cries predicted good weather, while those flying out to sea or giving long, wailing cries predicted rain.[29][32] In the Orkney and Shetland islands of Scotland, the species is still known as the "rain goose" in deference to its supposed weather-predicting capabilities.[32]
Bhutan, Japan and the Union of the Comoros have issued stamps featuring the Red-throated Diver.[47]
[edit] References
1.^ a b c BirdLife International (2008). Gavia stellata. 2008 IUCN Red List of Threatened Species. IUCN 2008. Retrieved on 2008-10-14.
2.^ a b c Carboneras, p. 162
3.^ Allen, J. A (July 1897). "The Proper Generic Name of the Loons". The Auk 14 (3): 31... . elibrary.unm.edu/sora/Auk/v014n03/p0312-p0313.pdf.
4.^ a b Johnsgard, Paul A. (1987). Diving Birds of North America. University of Nevada–Lincoln. ISBN 0803225660. digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1011&a....
5.^ Simpson, Donald Penistan (1979). Cassell's Latin Dictionary (5 ed.). London: Cassell Ltd. p. 883. ISBN 0-304-52257-0.
6.^ Carboneras 1992, p. 169
7.^ Svensson, Lars; Peter Grant (1999). Collins Bird Guide. London: HarperCollins. pp. 12–13. ISBN 0-00-219728-6.
8.^ a b c d Sibley, David (2000). The Sibley Guide to Birds. New York: Alfred A. Knopf. p. 23. ISBN 0-679-45122-6.
9.^ Cramp 1977, p. 42
10.^ Cramp 1977, p. 49
11.^ a b c Cramp 1977, p. 48
12.^ Carboneras 1992, p. 164
13.^ Carboneras, p.171
14.^ Howell, Steve N. G.; Sophie Webb (1995). A Guide to the Birds of Mexico and Northern Central America. Oxford University Press. p. 92. ISBN 0-19-854012-4.
15.^ Cramp, p. 45
16.^ Cassidy, Frederic Gomes; Hall, Joan Houston (1985). Dictionary of American Regional English. Harvard University Press. p. 539. ISBN 0674205111. books.google.com/books?id=tuLKtLkFshoC&pg=RA1-PA539&a....
17.^ Haviland, Maud D. "On the Method of Progression on Land of a Young Red-throated Diver". British Birds 8 (10): 24... .
18.^ Mead-Waldo, E. G. B. "Habits of the Red-throated Diver". British Birds 16 (6): 172–3.
19.^ Powers, Kevin D.; Jeffrey Cherry. "Loon migrations off the coast of the northeastern United States". Wilson Bulletin 95 (1): 12... . elibrary.unm.edu/sora/Wilson/v095n01/p0125-p0132.pdf.
20.^ Davis, Rolph A. (January 1971). "Flight speed of Arctic and Red-throated Loons". The Auk 88 (1): 169. elibrary.unm.edu/sora/Auk/v088n01/p0169-p0169.pdf.
21.^ Wolfenden, Glen E.. "Selection for a Delayed Simultaneous Wing Molt in Loons (Gaviidae)". The Wilson Bulletin 79 (4): 41... . elibrary.unm.edu/sora/Wilson/v079n04/p0416-p0420.pdf.
22.^ a b Carboneras 1992, p. 171
23.^ a b c d Ehrlich, Paul R.; Dobkin, David S., Wheye, Darryl & Pimm, Stuart L. (1994). The Birdwatcher's Handbook. Oxford University Press. p. 2. ISBN 0-19-858407-5.
24.^ Townsend, Charles W. (July 1909). "The Use of the Wings and Feet by Diving Birds". The Auk 26 (3): 23... . elibrary.unm.edu/sora/Auk/v026n03/p0234-p0248.pdf.
25.^ Cocker, Mark; Mabey, Richard (2005). Birds Britannica. London: Chatto & Windus. p. 3. ISBN 0-701-16907-9.
26.^ Cramp 1977, p. 46
27.^ Hart, Alan S.; Jardine, David C. and Colin Hewitt (June 1998). "Red-throated Diver feeding young in October". British Birds 91 (6): 231.
28.^ Barber, S. C. (June 2002). "Red-throated Diver feeding young in November". British Birds 95 (6): 313.
29.^ a b "Red-throated Diver". British Trust for Ornithology. blx1.bto.org/birdfacts/results/bob20.htm. Retrieved on 2008-06-27.
30.^ a b "All About Birds: Red-throated Loon". Cornell Lab of Ornithology. www.birds.cornell.edu/AllAboutBirds/BirdGuide/Red-throate.... Retrieved on 2008-06-30.
31.^ Groves, Deborah J.; Conant, Bruce; King, Rodney J.; Hodges, John I.; King, James G. (1996). "Status and trends of loon populations summering in Alaska, 1971–1993". The Condor 98 (2): 189–195 . doi:10.2307/1369136. elibrary.unm.edu/sora/Condor/files/issues/v098n02/p0189-p....
32.^ a b c d "Rise in divers mystifies experts". BBC News. news.bbc.co.uk/2/hi/uk_news/scotland/highlands_and_island.... Retrieved on 2007-09-07.
33.^ "Waterbird species to which the Agreement applies". Agreement on the Conservation of African-Eurasian Migratory Waterbirds. www.unep-aewa.org/documents/agreement_text/eng/pdf/aewa_a.... Retrieved on 2008-06-29.
34.^ "Birds Protected by the Migratory Bird Treaty Act". US Fish and Wildlife Service. www.fws.gov/migratorybirds/intrnltr/mbta/mbtandx.html#l. Retrieved on 2008-06-29.
35.^ Eriksson, M.O.G.; Johansson, I. & Ahlgren, C.G. (1992). "Levels of mercury in eggs of red-throated diver Gavia stellata and black-throated diver G. arctica in southwest Sweden" (Abstract). Ornis Svecica 2 (1): 29–36. md1.csa.com/partners/viewrecord.php?requester=gs&coll....
36.^ Schamel, Douglas; Tracy, Diane (Summer 1985). "Replacement Clutches in the Red-throated Loon". Journal of Field Ornithology 56 (3): 28... . elibrary.unm.edu/sora/JFO/v056n03/p0282-p0283.pdf.
37.^ Serle Jnr., W. (January 1936). "Mortality amongst Red-throated Divers". British Birds 29 (1): 81-82.
38.^ Eberl, Christine; Picman, Jaroslav (July–September 1993). "Effect of Nest-site Location on Reproductive Success of Red-throated Loons (Gavia stellata)". The Auk 110 (3): 43... . elibrary.unm.edu/sora/Auk/v110n03/p0436-p0444.pdf.
39.^ Booth, C. J. (January 1978). "Breeding success of Red-throated Divers". British Birds 71 (1): 44.
40.^ Gordon, Bryan C.; Savage, Howard. "Whirl Lake: A Stratified Indian Site Near the Mackenzie Delta". Arctic 27 (3): 17... . pubs.aina.ucalgary.ca/arctic/Arctic27-3-175.pdf.
41.^ Tagliacozzo, Antonio; Gala, Monica (November 2002). "Exploitation of Anseriformes at two Upper Palaeolithic sites in Southern Italy: Grotta Romanelli (Lecce, Apulia) and Grotta del Santuario della Madonna a Praia a Mare (Cosenza, Calabria)". Acta zoologica cracoviensia 45 (special issue): 117-131 . www.isez.pan.krakow.pl/journals/azc_v/pdf/45/09.pdf.
42.^ Bird, Louis; Brown, Jennifer S.H. (2005). Telling Our Stories: Omushkego Legends and Histories from Hudson Bay. Broadview Press. ISBN 1551115808. books.google.com/books?id=Cc9dgTkkfcoC&printsec=front....
43.^ Forbes, Graham; Robertson, Kelly; Ogilvie, Carey; Seddon, Laura (September 1992). "Breeding Densities, Biogeography, and Nest Predation of Birds on Igloolik Island, NWT". Arctic (Peterborough, Ontario) 45 (3): 295-303 . pubs.aina.ucalgary.ca/arctic/Arctic45-3-295.pdf.
44.^ "Red-throated Loon". Birds of North America Online. Cornell Laboratory of Ornithology and the American Ornithologists' Union. bna.birds.cornell.edu/bna/species/513/articles/conservation. Retrieved on 2008-03-27. (Registration required)
45.^ a b Köngäs, Elli Kaija (Spring 1960). "The Earth-Diver (Th. A 812)". Ethnohistory 7 (2): 15... . www.jstor.org/pss/480754.
46.^ Lutwack, Leonard (1994). Birds in Literature. University Press of Florida. p. 82. ISBN 0813012546.
47.^ Scharning, Kjell. "Stamps showing Red-throated Loon Gavia stellata". Theme Birds on Stamps. www.birdtheme.org/mainlyimages/index.php?spec=1458. Retrieved on 2009-02-13.
[edit] Sources
Carboneras, Carles (1992). "Family Gaviidae (Divers)". in Josep del Hoyo, Andrew Elliott & Jordi Sargatal. Handbook of the Birds of the World, Volume 1: Ostrich to Ducks. Barcelona: Lynx Edicions. pp. 162–172 .
Cramp, Stanley, ed (1977). "Gavia stellata Red-throated Diver". Handbook of the Birds of Europe, the Middle East and North Africa: Birds of the Western Palearctic, Volume 1, Ostrich to Ducks. Oxford University Press. pp. 42–49. ISBN 0-19-857358-8.
[edit] External links
Wikimedia Commons has media related to: Gavia stellata
Red-throated Diver photos on Philadelphia's Academy of Natural Sciences's Visual Resources for Ornithology website
Red-throated Diver videos on Handbook of Birds of the World's Internet Bird Collection website
Red-throated Diver sound recordings on xeno-canto.org's website
Retrieved from "http://en.wikipedia.org/wiki/Red-throated_Diver"
Categories: IUCN Red List least concern species | Gaviiformes | Arctic birds | Birds of Europe | Birds of Asia | British Isles coastal fauna | Birds of Italy
Grasshoppers are species which change colour and behaviour at high population densities are called Grasshoppers the typical insect body of head, thorax and abdomen. The head is held vertically, at an angle to the body with the mouth at the bottom. It bears a large pair of compound eyes which give all-round vision, three simple eyes which can detect light and dark and a pair of antennae which are sensitive to touch and smell. The downward-directed mouthparts are modified for chewing and there are two sensory palps in front of the jaws.
Courting Behaviour of Pied Stilts (Image 6 of 10), NZ…
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