I've got my window open and I'm trying to work (on a break) but over the last hour or so all I can hear is constant crows squawking. Usually all I hear is birds tweeting but today the crows are at it! Does this mean anything?
I've seen sparrowhawk catch pigeon in the middle of Birmingham on a busy Saturday. Two years ago red kites moved in to the area for the first time and are now seen regularly. Buzzards are everywhere
I'd hazard a guess at Jackdaws. You tend to get them round chimneys a lot.
They are fledging at the moment here. They start at about 4am and squawk all day. How I haven't gone out with the gun, I do not know. Raiding the song thrush's nest yesterday did not endear them to me much either.
Although (like most corvids) they are extremely intelligent.
Rooks have pale grey beaks, which extend back to the head, crows are all black, but are about the same size.
A couple of weeks ago I saw dozens of crows squawking which is known as a "Murder"