very speckled winter plumage.
No interactions present.
I think the brown colour indicates that this is a young bird. Does anyone know the reason why the bill is dark in winter, yellow in summer?
OU Student BSc Natural Sciences
appears to be a juvenile, I have looked through my books etc and they all mention the beak changing colour, but no reason why.
Dave. Student FDa Conservation and Countryside Management.
Perhaps the yellow bill colour is part of birds breeding plumage or display. The bird in the photo is moulting between its juvenile and adult 1st winter plumage. (juvenile birds dont have the spots yet)
You are right the bill colour is for breeding. They loose the colour in winter to avoid predation.
Visit the iSpot Yorkshire forum for information on events, issues and news relating to 'God's own country'
Lat/Lng: 50.2, -5.4
OS grid ref: SW5841