. Bird-life : a guide to the study of our common birds . Fig. Q.—Wing of Woodcock, showing threeouter attenuate feathers. (). Fici. 10.—Jacana, showing spur on wintr (natural size) and elongated toes (/anatural size). gesture to the actual delivery of a blow is but a , Pigeons, and Chickens can deal forcible blowswith their wings. Screamers, Lapwings, and Jacanas FORM AND HABIT: THE TAIL. 25 have formidable spurs on tlieir wings, wliicli tliey aresupposed to use in combat. The Tail.—Except wlien sexually developed, tlieshape of the tail is largely governed by the characterof i
. Bird-life : a guide to the study of our common birds . Fig. Q.—Wing of Woodcock, showing threeouter attenuate feathers. (). Fici. 10.—Jacana, showing spur on wintr (natural size) and elongated toes (/anatural size). gesture to the actual delivery of a blow is but a , Pigeons, and Chickens can deal forcible blowswith their wings. Screamers, Lapwings, and Jacanas FORM AND HABIT: THE TAIL. 25 have formidable spurs on tlieir wings, wliicli tliey aresupposed to use in combat. The Tail.—Except wlien sexually developed, tlieshape of the tail is largely governed by the characterof its owners flight. Male Lyre-birds, Pheasants, Fowls,Hummingbirds, and many others furnish well-markedinstances of the tail as a sexual character. Indeed, asthe least important to the bird of the four externalorgans we are speaking of, the tail is more often sexuallymodified than any of the other three. The main office of the tail, however, is mechanical, toact as a rudder in flight and a balancer when perch-ing. Short-tailed birds generally fly in a straight course,and can not make sharp turns, while long-tailed birds canp
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirdsun, bookyear1901
