We live in Chorley, Lancashire in a fairly rural area with lots of fields and trees. Last night we saw 2 birds we had never seen before. About the size of a crow, but slimmer. They had a russet brown plumage and a dark tail that seemed to fan out. They also had a beak like a finch. At least one of them had a small crest on the back of its head. They made a lot of noise sat in the tree - and all the crows and magpies came and also sat on the tree, watching. It could be that it was some sort of mating ritual or that they were young birds fighting. They both dropped to the ground (field) and were no longer in view. It could be they have been blown off course ? Any ideas what they could be ? (No photos, unfortunately)