. Bird-life; a guide to the study of our common birds . Cassique {Ostinops) of South Ameiica,after giving voice to notes which sound like those pro-duced by chafing trees in a gale, leans far forward,spreads and raises his large orange and black tail, thenvigorously claps his wings together over his back, mak-ing a noise which so resembles the cracking of branchesthat one imagines the birds learned this singular per-fonnance during a gale. The birds mentioned thus far have no especial wingstructure beyond rather stiffened feathers; but in theWoodcock, some Paradise-birds and Flycatchers, Guans
. Bird-life; a guide to the study of our common birds . Cassique {Ostinops) of South Ameiica,after giving voice to notes which sound like those pro-duced by chafing trees in a gale, leans far forward,spreads and raises his large orange and black tail, thenvigorously claps his wings together over his back, mak-ing a noise which so resembles the cracking of branchesthat one imagines the birds learned this singular per-fonnance during a gale. The birds mentioned thus far have no especial wingstructure beyond rather stiffened feathers; but in theWoodcock, some Paradise-birds and Flycatchers, Guans,Pipras, and other tropical birds, certain wing-feathersare singularly modified as musical instruments. Some-times the outer primaries are so narrowed that little butthe shaft or midrib is left, as in both sexes of the Wood-cock, when the rapid wing-strokes are accompanied by a 2-4 FORM AND HABIT: THE WING. high, whistling sound. In other eases the shafts of thewing-feathers may be much enlarged and horny, when the bird makes a sin-ular snapping sound. If you recall thesupplicating manner ofa young bird as with Fig. 9.—Winsr of Woodcock, showing three ^ n .• - outer attenuate feathers. (-/■! natural gently lluttenng WlUgS ■ ^ it begs for food, you will recognize one of several ways in which the wingsmay express emotion. Birds also threaten with theirwings, as any hen with chicks ^vill testify, and from this
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsunitedstates
