knock me down with a feather, Clever Trevor

From Clever Trevor, (Ian Dury And The Blockheads)

That is what this is - a close up of a feather. I found it down by the river and I have no idea what it is from. The feather has three bands of grey and if I had thought about it I would have uploaded the feather.

Late addition here is the feather.

Struggled for an idea for today's blip as you can tell.