retrices


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retrices

the very long contour feathers coming from the side of the tail. These are the longest feathers of all in the domestic fowl.
References in periodicals archive ?
For classification as POS, feather alterations in white-tailed sea eagles had to meet 6 or more of the following criteria: 1) loss of all or most flight and tail feathers and eventually covert feathers during the nestling or fledgling period (Fig 1); 2) longitudinal splitting or deformation of the rachis of the primary or secondary feathers and retrices (Fig 2b); 3) excessive keratin deposition on the ventral side of the rachis (Fig 2c); 4) extremely shortened primary and secondary feathers and retrices, including the calamus (Fig 3); 5) curved appearance of the primary and secondary feathers and retrices; 6) replacement of lost abnormal flight and tail feathers by new abnormal feathers; 7) new feathers easily removable; and 8) constriction of the distal part of the calamus.
37) All new growing feathers were abnormal, the coverts had stress marks, and the primary feathers and retrices were abnormally short.