rectrix

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Related to rectrices: Remige, Retrice

rectrix

(rĕk′trĭks)
n. pl. rectrices (rĕk′trĭ-sēz′, rĕk-trī′sēz)
One of the stiff main feathers of a bird's tail, used to stabilize the bird while in flight and to control its direction.

rectrix

(pl. retrices) see FEATHER.
References in periodicals archive ?
wing length, third primary length, extent of white on the primaries, extent of white on the rectrices, and tail length).
Valores de longitud (en cm) de las rectrices externas, ala y de la segunda primaria, del cuerpo y de la cola, asi como el peso corporal (en g) de 17 palomas mensajeras (10 machos y 17 hembras) Macho Rectriz D (1) Rectriz I (2) Long.
Workers have suggested that the evolution of radially arranged rectrices enhanced aerial maneuverability and braking (Heilmann 1926; Lowe 1944; Maynard Smith 1952; de Beer 1956; Sereno and Rao 1992).
Nevertheless, in 1989, a greater proportion (47% of 15) of females in dry habitat had tapered rectrices (indicating that they were 1st-yr birds) than did females nesting over water (30% of 37), but the difference was not significant (G = 1.
We pulled two rectrices from each yellow rail (n = 170), and determined sex by extracting the DNA from the quill using a Qiagen DNEasy kit (QIAGEN Inc.
For instance, in the middle of the regular molt, the new primaries 6 and 7 may be short or missing, as are secondaries 2 and 3 and tertial 7, while the average length of the new rectrices is only half the normal (Jenni and Winkler 1994: [ILLUSTRATION FOR STAGE G IN FIG.
On each side of the pygostyle lie the rectricial bulbs, specialized fibroadipose structures that encase the roots of the twelve rectrices (Baumel 1988).
Ontario, Canada) sutured between the central rectrices (see Halterman, 2009); weight of a transmitter was ca.
De cada uno de los individuos se recolectaron remiges primarias y rectrices, que se almacenaron en tubos Eppendorf de 1,5 ml con 0,5 ml de etanol al 70%, para la posterior obtencion del ADN (DONOHUE & DUFTY, 2006; CONSTANTINI et al.
During the dance, males rapidly stomp their feet, click the rectrices of their upturned tail, and hold their wings outward while producing the cork note (Lumsden, 1965; Hjorth, 1970).
El patron cromatico fue casi nulo en las primarias, secundarias, terciarias y rectrices, presentando un color Blackish neutral gray.