. The bird, its form and function . ^ hovers before alighting,the tail, wide-spread and brought downward, gives effi-cient aid in retarding the impetus. Tails 409 We notice that birds which have very short tails areunable to turn quickly and that their flight is very direct,or even where there is a long tail, if it is principally forornament and not well muscled, it is of little use in help-ing its owner to change the direction of flight. Thepartridge-like tinamous of South America are good exam-ples of the first-mentioned group. Their tails are smalland useless, and when once the bird launche
. The bird, its form and function . ^ hovers before alighting,the tail, wide-spread and brought downward, gives effi-cient aid in retarding the impetus. Tails 409 We notice that birds which have very short tails areunable to turn quickly and that their flight is very direct,or even where there is a long tail, if it is principally forornament and not well muscled, it is of little use in help-ing its owner to change the direction of flight. Thepartridge-like tinamous of South America are good exam-ples of the first-mentioned group. Their tails are smalland useless, and when once the bird launches itself into.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1906
