Hybrid birds

by Firkin - uploaded on December 5, 2017, 11:10 pm

From a drawing in 'Canaries, hybrids, and British birds in cage and aviary', John Robson and Sidney Lewer, 1926. The birds were labelled siskin-greenfinch, goldfinch-bullfinch, greenfinch-bullfinch, redpoll-goldfinch and linnet-bullfinch