Question

The face is marked with prominent orange-yellow lores, and the wings have yellow, red and white patches. The tail is black with crimson coloured undertail coverts and red tips. The feet are pink and the bill is black at the face fading to pale white. A second duller individual was mist netted, which was probably the female

Answer 1

Cholecystokinin is secreted by cells of the upper small intestine. Its secretion is stimulated by the introduction of hydrochloric acid, amino acids, or fatty acids into the stomach or duodenum. Cholecystokinin stimulates the gallbladder to contract and release stored bile into the intestine.

Answer 2

The face is marked with prominent orange-yellow lores, and the wings have yellow, red and white patches. The tail is black with crimson coloured undertail coverts and red tips. The feet are pink and the bill is black at the face fading to pale white. A second duller individual was mist netted, which was probably the female.