What's buzzing or flying near you 2023 ?

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Any idea about who this nest belongs to?

 

It's at least 3ft wide

We have two crows that have been in our garden for 16 or 17 years (the third one died last year) and we know which ones they are because we can recognise their markings and have given them names. They've never nested in the willow tree before but spend most of the day in the garden either sitting at the top of one of our trees or cleaning up under the bird feeders. We've become quite attached to them.

Squirrels usually make their nests spherical and not flat. I don't think our Red Kite has nested there and it doesn't seem quite big enough and his perch is at the top of a different tree. So I guess it's more likely to be the crows.

 

Rooks