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63 A comparative anatomical, histological and histochemical study of small intestine in Kestrel (Falco tunniculus) and white… Expand Although song development in songbirds has been much studied as an analogue of language development in humans, the development of… Expand White-eared Hummingbird ( Hylocharis leucotis ) territorial behavior is affected by energy availability . – Territoriality is a… Expand Avian keratin disorder produces an abnormal beak growth. This disorder has been reported in several bird species in America and… Expand Variations in the quality or quantity of a food source determines if an animal takes the risk of spending energy searching for or… Expand Comparing closely related species that live in different environments is a powerful way to understand selective pressures that… Expand Over 90% of birds breed in socially monogamous partnerships. Among monogamous passerines, species vary from those with extra-pair… Expand A re you aware the White-eared Bulbul is monitoring the goings-on in Afghanistan? Few people know this handsome, precocious… Expand