rectrix

(redirected from rectricial)
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rectrix

[′rek·triks]
(vertebrate zoology)
One of the stiff tail feathers used by birds to control direction of flight.
References in periodicals archive ?
One goal of our study was to test these hypotheses of rectricial abduction.
Although the tail appears well preserved, changes in rectricial position during death and burial cannot be ruled out (see Discussion).
In all cases, rectricial abduction occurred, but full fanning was more elusive.
Sequential removal of muscles inserting on the bulb does not reduce rectricial abduction by the stimulated bulbi rectricium in pigeons or turkeys.
Major bursts of activity do not always translate into increased rectricial abduction.
The relationship between lift and rectricial spreading is best shown by fanning the tail to different degrees under identical flight conditions.