Jacques Hnizdovsky is the king of relief block printed patterns and he’s done many birds of all sorts with intricately geometric feathers. But interestingly, his rooster is more about the the sweep of feathers than their design. His rooster is quite simple and bold, and very sleek. I'd even go with "regal."
Hugh Ribbans was also clearly playing with pattern in his hen. The various areas of feathers are quite stylized, with individual feathers outlined in some areas, and filler patterns in others. I like how active this hen looks, head down and scurrying, unlike the more static creatures it’s so much easier to show.
[Images: Chanticleer, rubber block print by AEGN, 2009;
Hen and Chicks, rubber block print by AEGN, 2009;
Cock, woodcut by Jacques Hnizdovsky, 1972;
Little Hen, linocut by Hugh Ribbans (Image from hughribbans.com);
The Cock and the Jewel, wood block print by Thomas Bewick from The Fables of AEsop, 1885 (Image from Internet Archive and University of California, Victorian Web);
Bantam Chicken, linocut by Kelly Shields (Image from her Etsy Shop RedFlowerLetterpress).]