Comparative Morphological Studies on Beak and Feet in Some Birds
Keywords:Key words, Beak, Feet, Birds, Hornbill, Duck, Eagle
The beak and feet of studied birds showed differences in morphology which is adopted to its environmentÂ and feeding habits. Beaks of sparrow, scaly breasted munia and red tailed bulbul had short pointed beak andÂ they had anisodactyl feet adopted mainly for perching. Whereas, in jungle fowl and pea hen premaxilla slightlyÂ overhanged the mandible and they also had anisodactyl feet but adopted to walking rather than to fly. IndianÂ runner duck had sifting type, for picking up the food from mud, eagle had hooked type to tear flesh and they hadÂ palmate webbing suitable for swimming and talons to carry and to kill the prey respectively. Hornbill hadÂ massive and large beak and it had casque on it whereas, red naped ibis had long probing beak, both hadÂ anisodactyl feet but former is adapted to perching later to walk in marshy lands. Emu had wide based pointedÂ beak suitable for eating leaves, grass shoots, larvae and beetles, whereas cuckoo had pointed beaks adopted toÂ eat small insects, berries, larvae etc. The emu had tridactyl feet and cuckoo had zygodactyl feet.