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David Bromstad spoke on behalf of DuPont™ Corian® at Design Philadelphia. What's Your Design Personality?
Quiz #7 03/10/08-03/16/08
This week’s bird is shown in a rather straight forward view with many field marks visible. However, this well shown bird is rather drab and the field marks visible can belong to several species, in particular two species that are regularly confused with one another. What we can see in the plumage, which is what most of us look at first, we can see two white wing bars and white around the eyes. The body form, large head and stout body, and these two field marks leave us thinking of the vireos, perhaps a warbler and Ruby-crowned Kinglet. No one guessed the only real warbler candidate, Pine Warbler, but in the interest of being thorough we should take a look at it. Since we can see the face well we can eliminate this species by facial pattern. Our bird has an eye-ring that is broken at the top and whitish lores that give this bird somewhat of a serious expression. Anthropomorphism aside, this bird also sports a yellow wash to the edges of the secondaries. These are not consistent for Pine Warbler and are important field marks to keep in mind when considering other species.
When we look at the vireos only Hutton’s, Plumbeous, and Cassin’s have a similar facial pattern and strong double white wing bars. Our quiz bird’s bill, however is quite small for either Plumbeous or Cassin’s and the broken eye-ring isn’t consistent for these as well. So, we’re left with Hutton’s Vireo and Ruby-crowned Kinglet, a comparison many people in the Pacific Northwest are very familiar with. The yellow wing wash and wing bars are extremely similar in these relatively unrelated species. Habitat overlap only confuses us more. There are certainly many similarities between these species but there also a few big dissimilarities. For one, the feet, the oh so important feet. Ruby-crowned Kinglets look as though they stood in yellow paint. That, in and of itself, is enough to clinch this ID. However, let’s look at a few others. The often pointed out black bar beneath the lower white wing bar on Ruby-crowned Kinglets (RCKI) is hard to see. When one sees a RCKI (I often call them Rickys) the black bar is obvious but, as you can see in this bird it is difficult to see that the yellow on the secondaries reaches the white wing bar. Facial pattern is another good thing to look at. RCKIs have an obvious broken eye-ring but nothing as broad as on Hutton’s (something poorly illustrated in Sibley’s). Plus the lores of Hutton’s Vireos (HUVI) are quite pale. Bill shape is perhaps the hardest to judge in the field but you can see that this HUVIs bill is way to thick to be that of a RCKI. Anyone that has held a RCKI in their hands will tell you that their bills are quite flat as well at being thin. There are a slough of behavioral differences that I won’t go into here that are excellent as well as voice differences. These were recently well covered on OBOL (Oregon Birders Online). I particularly like the comparison of Hutton’s Vireo's call note to their four-letter code, “huVI!”. I took this picture of a HUTTON’S VIREO on January 17, 2008 at Oaks Bottom Wildlife Refuge, in Portland, OR, while I thought I was taking a picture of a Ruby-crowned Kinglet!
ANSWER:
HUTTON’S VIREO
ANSWER BREAKDOWN:
Hutton’s Vireo – 8
Ruby-crowned Kinglet – 3
CONGRATULATIONS:
Rich Armstrong
Vivian Gross
Pamela Johnston
Aaron Skirvin
Diane Petty
Clint Brumitt
Larry McQueen
Craig Bennett
12 Jan 2013. With help from my Lovely Assistant (aka Wonderful Husband), I presented a Quiz this afternoon. People seemed to enjoy it and it whiled away a rainy afternoon.
Enter Naked Security 12 Days of Christmas Quiz, Win Prizes nakedsecurity.sophos.com/2014/12/01/12-days-of-naked-secu...
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Jane Bird dancing wtih David Briggs.
TARRANT'S QUIZ PARTY 2009 FOR CHILDREN WITH LEUKAEMIA
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The World Famous iseries Pub Quiz!
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