38.31.00=Paleontology 39.25.00=Medical Geography 39.29.00=Toponymy 41.19.00=Solar System Paleontology african america american american robin andes mountains animal animal life area australasian lark australia australian barn barn swallow barred antshrike behavior behavior reproduction behavioral trait bewicks wren bird birdlife birdlife international birdlife net birds black black-capped donacobius black-winged black-winged stilt body books books blakers branch breeding brightly colored british columbia brown build bulbul cactus wren cattle cattle egret cedar waxwing centimeter conservation conservation status cooperative breeder cooperative breeding cormorant cornell university costa rica crag martin creagrusmonterey bay creamy white crested crested lark curved downward day dense growth derek pomeroy diet drier climate eastern bluebird eastern coast eastern whipbird eat ecological niche economic benefit egg egret elizabeth lack endangered facing enjoy watching eurasian european evolutionary biology excited males extinction eye falcon family feather female field guides fiery minivet flapped lark flight fly flycatcher food foot forest geographic geographic range grass gray great great cormorant greater ground group grzimek guide guy tudor habitat head helmet vanga high hoopoe horned lark house house sparrow human illustration inch inch centimeter indian ocean industry based insect june lark latin america lay leaf life life resource live long lynx edicions malay peninsula male males mate mating moist microclimate monterey bay mountainous region natural history neotropical companion nest nesting box nonbreeding season northern oceanic island olive green open cup order org pair parent people peregrine peregrine falcon permission physical pigeon plant plowed field population pound kilogram predatory cat press prey princeton purplish spot rainy season range red red-billed scythebill reproduced reproduced permission reproduction reproductive behavior resource rock rock pigeon rocky mountains rocky shore rose-throated becard rufous hornero rufous vanga san diego science daily sea level season sex short sibley silky flycatcher single nesting site slaty flycatcher solomon islands song sound south south dakota southern southwest texas sparrow specie species spiny cactus spotted spotted quail-thrushes status stiff shaft stilt striated grasswren striated grasswrens student student animal studying wildlife sub-montane slope sugar cane surrounding island swallow tail tend territory texas press threatened time tree university varies depending vulnerable facing wagtail warmer climate water western hemisphere white white shaft white-breasted thrasher wing winter wren www sciencedaily year yellowbellied sunbird-asity york york alfred york facts young zitting cisticola