Morphological characterization with special reference to color variations in domestic geese (Anser anser domesticus)

摘要

A study was planned to record and document the morphological characteristics with special reference to color variations in domestic geese. Knob, dewlap and paunch were present in 44.71, 3.07 and 13.59 % of birds respectively. No curled feathers in the tail were seen in any of the geese studied. Ample color variation was observed in the plumage, eye and bill but not in shanks. Color of the plumage along the body, head, neck, abdomen, and across the wings varied from all cinnamon to all white through all intermediate gradations. Bill color also varied from all black to all yellow through all intermediates. Color of eyes was either grey or brown. No variation was noted in the shank color. It was orange in adults and yellow in goslings. The peculiar colour pattern and markings in domestic geese might be useful in identification of individual birds as is done in horses. Sexual dimorphism on the basis of plumage color and presence of curved tail feathers was absent.