Hornbill Southern yellow-billed
Geelbekneushoringvoel
(Tockus leucomelas)
Geelbekneushoringvoel
(Tockus leucomelas)
The southern yellow-billed hornbill (Tockus leucomelas) is a hornbill found in southern Africa. Yellow-billed hornbills feed mainly on the ground, where they forage for seeds, small insects, spiders and scorpions. This hornbill species is a common and widespread resident of dry thornveldt and broad-leafed woodlands. They can often be seen along roads and water courses.
It is a medium-sized bird, 48–60 centimetres (19–24 in) in length, 132–242 grams (0.291–0.534 lb) in weight and is characterized by a long yellow and down-curved beak. This beak is huge in comparison to its body and can account for up 1/6th of the entire body length. Male beaks are on average 90 mm long while female beaks are an average of 74 mm. Males are generally bigger than females but there is overlap between the sexes. The size difference of the beak is a fairly reliable way of differentiating sex in wild hornbills.
The casque that characterizes all hornbills is of a very modest size in the southern yellow-billed hornbill. It is small, but it covers almost the entire length of the beak in males (less so in females), and may give the impression that they do not actually have a casque. As in all hornbills, the size of the beak actually intrudes on the frontal vision of the bird and the first two neck vertebrae are fused together.
Also, like most other hornbills, they possess a long tail, long eyelashes, stubby legs and stubby toes. The front three toes are fused together near the base.
They have white belly, grey neck, and black back plumage with abundant white spots and stripes. The neck has gray spots and the chest is lightly striated with black. Southern yellow-billed hornbills have no plumage pigmentation save for melanin, which can only produce shades of black and white.[2] The eyes are usually yellow, though brown has also been seen. The skin around the eyes and in the malar stripe is pinkish. The related eastern yellow-billed hornbill from north-eastern Africa has blackish skin around the eyes.
The southern yellow-billed hornbill is active during morning, day and evening. At night, it will sleep high in a tree so it won’t be preyed on. They can be found alone, in couples or in small groups. They generally tend to be loners unless it is breeding season, nesting season or if there is local migration during dry season.
The southern yellow-billed hornbill is often seen searching for food on the ground or in shrubs. It will not dig the ground, but it will overturn debris to find insects. It can also be seen pursuing insects by hopping heavily after it.
They are generally sedentary and they will defend their territories with elaborate displays. However, during the dry season, they will sometimes range widely in order to find food. Couples are usually monogamous and have a clear division of labour between males and females.
They have been known to live for up to 20 years in captivity, though their longevity in the wilds remains unknown.
Wikipedia
Hornbill Southern yellow-billed
Geelbekneushoringvoel
(Tockus leucomelas)
Geelbekneushoringvoel
(Tockus leucomelas)
The southern yellow-billed hornbill (Tockus leucomelas) is a hornbill found in southern Africa. Yellow-billed hornbills feed mainly on the ground, where they forage for seeds, small insects, spiders and scorpions. This hornbill species is a common and widespread resident of dry thornveldt and broad-leafed woodlands. They can often be seen along roads and water courses.
It is a medium-sized bird, 48–60 centimetres (19–24 in) in length, 132–242 grams (0.291–0.534 lb) in weight and is characterized by a long yellow and down-curved beak. This beak is huge in comparison to its body and can account for up 1/6th of the entire body length. Male beaks are on average 90 mm long while female beaks are an average of 74 mm. Males are generally bigger than females but there is overlap between the sexes. The size difference of the beak is a fairly reliable way of differentiating sex in wild hornbills.
The casque that characterizes all hornbills is of a very modest size in the southern yellow-billed hornbill. It is small, but it covers almost the entire length of the beak in males (less so in females), and may give the impression that they do not actually have a casque. As in all hornbills, the size of the beak actually intrudes on the frontal vision of the bird and the first two neck vertebrae are fused together.
Also, like most other hornbills, they possess a long tail, long eyelashes, stubby legs and stubby toes. The front three toes are fused together near the base.
They have white belly, grey neck, and black back plumage with abundant white spots and stripes. The neck has gray spots and the chest is lightly striated with black. Southern yellow-billed hornbills have no plumage pigmentation save for melanin, which can only produce shades of black and white.[2] The eyes are usually yellow, though brown has also been seen. The skin around the eyes and in the malar stripe is pinkish. The related eastern yellow-billed hornbill from north-eastern Africa has blackish skin around the eyes.
The southern yellow-billed hornbill is active during morning, day and evening. At night, it will sleep high in a tree so it won’t be preyed on. They can be found alone, in couples or in small groups. They generally tend to be loners unless it is breeding season, nesting season or if there is local migration during dry season.
The southern yellow-billed hornbill is often seen searching for food on the ground or in shrubs. It will not dig the ground, but it will overturn debris to find insects. It can also be seen pursuing insects by hopping heavily after it.
They are generally sedentary and they will defend their territories with elaborate displays. However, during the dry season, they will sometimes range widely in order to find food. Couples are usually monogamous and have a clear division of labour between males and females.
They have been known to live for up to 20 years in captivity, though their longevity in the wilds remains unknown.
Wikipedia