Little all-grey bird?
I live in Oxon, on a fairly mature housing estate with big trees, streams, unmowed areas for bugs, and so on.
I just had a little grey bird run into a window, even though there are anti-collision "stickers" on it. Beak was not that of a seed-eater like a grosbeak, more like a blackbird. Definitely adult, just grey all over. The head was darker grey but not black, no eye stripe or cap, some barring on the wings, medium-dark undercarriage.
Size-wise, well, he fit into an average adult hand, so probably beak to tail 8 inches?
Definitely not a swift or swallow, and the tail was in proportion to the rest of him.
Any ideas what he was? I've looked at dunnocks and shrikes, and none of them seem right, he's too big for a sparrow, to dull for a starling, and too light for a blackbird.
And, any advice on what to do with the body? The back fence is 30-ish feet from the house with a good hedge, so maybe the odor wouldn't be too bad if I put him out there for the rest of nature?