Birds of great variety occur throughout heraldry, at least in name A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P233. In truth, despite the proliferation of species, the actual depictions can sometimes be hard to distinguish! The crane, heron and stork are commonly to be found on a coat of arms but all tend to share the same stylised appearance A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1847, P164. The blackbird is amongst the bird species to appear in heraldry, though in appearance can look a lot like the cornish chough.