. The bird, its form and function . , the elasticity of the feather-tips allowing themto slip into every crevice! In many birds the tail is a perfect index of the emotions,doing much to compensate for the lack of facial is this true of the wrens, those feathered bundlesof tireless energy and curiosity, whose tails, upturned sohigh that they fairly tilt forward over the back, twitchand jerk with every passing mood. Even the geneticindividuality of a species may be hinted at in the wayit carries its tail; quiet, soft-mannered birds holding it 41 2 The Bird low, l^eneath the
. The bird, its form and function . , the elasticity of the feather-tips allowing themto slip into every crevice! In many birds the tail is a perfect index of the emotions,doing much to compensate for the lack of facial is this true of the wrens, those feathered bundlesof tireless energy and curiosity, whose tails, upturned sohigh that they fairly tilt forward over the back, twitchand jerk with every passing mood. Even the geneticindividuality of a species may be hinted at in the wayit carries its tail; quiet, soft-mannered birds holding it 41 2 The Bird low, l^eneath the wing-tips, while active, nervous species carry it more or less raised. In certain of the fl3^catchersthe tail, which hangs demurelydownward, reacts with a jerkto every note of the bird, as ifconnected with the birds vo-cal apparatus, as in our com-mon Least Flycatcher at everyThe-becM The ierking motion of the Fig. 327.—Tail of Chimney Swift. ., ^ , tail seems to have becomea regular habit with many birds, and, curiously
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1906
