Swoose, Wool (Dorset), 24-Oct-10, originally uploaded by Dave Appleton.
Swoose? No I’d never heard the word either until today. But then I saw birder Dave Appleton’s superb image (reproduced above) and followed the link to his website where he describes a bird which is a hybrid of a swan and a goose … hence a “swoose”. In fact he is describing this bird; publishing several sets of photographs of it; and documenting its history.
Now I didn’t know either that swans could cross-breed with geese. (That’s two things I’ve learnt today!) But, although it is extremely rare, apparently swans and geese can interbreed. As Dave explains the offspring don’t usually survive to adulthood. However the bird pictured is known to have hatched in 2003 and was photographed by Dave last October, possibly having successfully bred itself.
Following the story on Dave’s website, it seems that the parentage of this bird is pretty well authenticated short of someone managing to get samples and do the DNA profiling. I hope that it is possible to get the DNA profiling done; the results would be extremely interesting to those interested in birds but also, I imagine, to academic zoologists. And it would be interesting too to see if the bird’s proposed parentage is correct. If nothing else this is an interesting puzzle and I’d like to say “thanks” to Dave for making all this information available.
Of course, there’s another rather interesting and deeper legal puzzle here. All Mute Swans (our native, resident British species) belong to the Queen and are as such protected. Geese however appear to be protected only during the closed season (February through August) and are thus treated as game birds like duck). But what is a Swoose? Is it a swan or a goose? Were these birds to become common and a pest (very unlikely, I know) I feel sure this would be a most interesting legal debate. Just don’t anyone dare go and shoot the bird in the meantime because …
Whatever the bird actually turns out to be it is a most handsome and interesting creature which deserves a lifetime of quiet observation and protection.