beak birds blue heron eyes feathers great Heron legs nature outdoors rocks stalking wildlife wings bird Bird-of-prey branch diurnal eyesight falconiformes fast feathered hawk hunt hunter hunting intelligent perch perched predator predatory raptor sharp swift talons vision England eye feather feed grey nuthatch orange peanut reward Sitta success Sussex wing America animal ecuador Galapagos island marine pelican south water wild beach bill long mouth persepctive posing sand shadow summer tall thin wader captive claw Falco tinnunculus falcon head kestrel plumage chickens cockscomb comb coxcomb forage fowl hens livestock poultry rest roost english Great Britain house sparrow male passer domesticus Passeridae vertebrate Australian aves big-eyes boobook boobook-owl common-owl dark-chocolate-brown grip hawk-owl hooked-beak large-eyes mopoke mottled mottled-plumage ninox-novaeseelandiae nocturnal owl owl-species prominent-pale-spots rufous-brown small southern-boobook white-spots white-streaks endemic green Kea Nestor notabilis new zealand parrot road Strigopidae