Could be a new record…

Wryneck, feeding at South Gare earlier this week @teesbirds.bsky.social

I found these remains on the land opposite where the blast furnace once was, a few hundred yards off the road down to the South Gare. There is yellow, green and even blue on the feathers. I’m baffled.
Has anyone any ideas?
Thank you.
@teesbirds.bsky.social
@martinblick.bsky.social