contour feather


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contour feather

[′kän‚tu̇r ‚feth·ər]
(vertebrate zoology)
Any of the large flight feathers or long tail feathers of a bird. Also known as penna; vane feather.
References in periodicals archive ?
I propose that for purposes of the H-P system the 'first molt cycle' be defined as "the period starting with commencement of the initial acquisition of contour feathers and ending with commencement of (1) a uniformly-complete first prebasic molt that has equivalent timing as subsequent prebasic molts, if applicable, or (2) the second prebasic molt".
My proposed definition of 'first molt cycle' does not conform to the definition of 'cycle' in Humphrey and Parkes (1959) because the initial acquisition of contour feathers is not by means of a prebasic molt under the H-P system.
Quantifying structural variation in contour feathers to address functional variation and life history trade-offs.
2003) Definition of the None The period starting with `first molt cycle' commencement of the initial acquisition of contour feathers and ending with commencement of (1) a uniformly complete first prebasic molt that has equivalent timing as subsequent prebasic molts, if applicable, or (2) the second prebasic molt TABLE 2.
These examples suggest the specific structural dimensions of contour feathers are an evolutionary adaptation to a variety of behavioral patterns.
The White-capped and the Rufous-throated dippers have contour feathers that show the same structural dimensions as contour feathers of typical terrestrial birds, whereas those of the White-throated Dipper appear to have developed a slight increase in water resistance.
The tail pointed down and coverts and contour feathers were not fanned.
The tail was raised, coverts fully fanned, and the contour feathers were all raised.
The contour feathers were raised, with the head held low and the neck held the same way as in the Nest Defense Display.