Eye colour in bulbuls

posted in: Morphology-Develop., Species | 0

Light enters the eye through the pupil. The iris (Latin for “rainbow), the coloured part of the eye surrounding the pupil, controls the amount entering the eye. When lighting is bright, the pupil closes. It opens up when lighting is … Continued

Eyelashes in birds?

posted in: Morphology-Develop. | 10

On 9th February 2007, Heng Fook Hai posted a close-up image of the Oriental Pied Hornbill (Anthracoceros albirostris) and he noticed something he did not see before. So he posed the following questions: “I seldom see birds with long eyelashs … Continued

Do birds have teeth?

posted in: Morphology-Develop. | 2

Do birds have teeth? A few species may look as if they do. But these are actually tooth-like notches on their mandibles. And they are also not used to chew food. However, a developing chick inside the egg may have … Continued

Nictitating membrane

posted in: Morphology-Develop. | 4

In April 2006 Johnny Wee spotted a White-throated Kingfisher (Halcyon smyrnensis) perching on a branch of a tree, eying a lizard on the ground nearby. He managed to take a few images with his digital camera as the bird launched … Continued

Albino birds

posted in: Morphology-Develop. | 3

Albino birds are rare but they do exist. This condition is the result of genetic mutation, whereby the pigment melanin is absent. And the absence of melanin means that the feathers are always white. In cases where some of the … Continued

Deformed bill

posted in: Hornbills, Morphology-Develop. | 3

While holidaying in Pangkor Island, Malaysia in May 2005, Susan Wong caught sight of an Oriental Pied Hornbill (Anthracoceros albirostris) with a deformed bill. With such an unusual bill, the bird obviously would have problems feeding. Yet, considering its size, … Continued

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