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The complete Grey-backed Shrike mitochondrial genome has been sequenced to be 16,820 bp in length, consisting of 37 encode genes… Expand The impaling of prey is a behavioral trait restricted to the true shrikes (Laniidae). Here, we suggest the ontogeny of this… Expand Es ésta la segunda parte de nuestra clave para la identificación de los Passeriformes ib€ricos, y que continúa a la primera… Expand The New World passerine subfamily Vireoninae contains 43 species in four genera. Vireo, the largest genus, is primarily North… Expand The males of most birds are larger than the females, but the opposite is true of birds of prey-the hawks and owls of the orders… Expand The phenomenon of polymorphism is widespread in living organisms, but its adaptive significance remains obscure in most cases… Expand The Feather Mite Genus Proctophyllodes (Sarcoptiformes: Proctophyllodidae) WARREN T. ATYEO NORMAN L. BRAASCH VOLUME 5 MAY 1966 A… Expand The birds of the British isles. Vol. 2, Alaudiae, Motacilidae, Certhiidae, Sittidae, Paridae, Laniidae, Vireonidae, Bombycillidae, Muscicapidae, Regulidae