A covert feather or tectrix on a bird is one of a set of feathers, called coverts, which cover other feathers. The coverts help to smooth airflow over the wings and tail.
A rear view of an Indian peacock's true tail and elongated uppertail covert feathers
The common pheasant, ring-necked pheasant, or blue-headed pheasant, is a bird in the pheasant family. The genus name comes from Latin phasianus 'pheasant'. The species name colchicus is Latin for 'of
Common pheasant male Heligan
Phasianus colchicus Rutland Water female 8
Male of hybrid stock in Poland Note thin white neck-band due to a ring-necked subspecies' contribution to hybrid gene pool