Thursday, October 05, 2006
Tasmanian Vs Brown Thornbill
I thought it might be useful to publish together, shots of both the Tasmanian (top), and Brown Thornbills (bottom). Let me say straightaway that in the real World of birding, you seldom, if ever, see them together. Also, the shots were taken in different light conditions, but that's all I've got folks! Local birders seem to mainly rely on the head markings and I think the shots show the difference. Personally, I've often used the undertail coverts, especially useful when the birds are high in the tops of trees. In the 'brown' they are light buff and in the 'Tasmanian', pure white--difficult to see in the image here, but I have found that to be diagnostic, and often on "Tasmanian', these coverts are 'fluffed' out. In the main, Tasmanian Thornbills inhabit wetter, denser habitat, than Browns. If any readers have their own 'pet' way of separating them, I'd be pleased to hear from you. I'm certainly not setting myself up as an expert!