Worries about my Rooks.

Click on the photos for a better view.
This Rook, a juvenile still, has somehow broken the tip of its lower mandible. The upper mandible's tip has now grown downward. Over time the two mandibles will chafe away their original shape as has been happening already.




And here's another Rook, another juvenile unfortunately. He/she also broke the mandible. Very similar break to the first one. This one however looks to be in a worst state health-wise.
The school next door has been closed for many days over the last 2 weeks. This had a major impact on our Rooks, Jackdaws and Hooded Crows, which usual feed there during break times. Blackbirds and Song Thrushes took advantage of this by moving into the garden. The Corvids are back now with the school open today, but I have seen them that much recently. They still feed here, but it seems that the Thrushes have enough power to keep Corvids on the fence.
A full head of feathers like this one is what attracts me to the Rook. (and that cheeky character of course.)

Loss of feathers is apparent in this bird:
it could be suffering from that disease that usually hits Jackdaws. But as these feed togeter, it is very well possible that they got it too. With this cold spell, I assume that the Corvids are moving up and down the countryside in search of food, and we end up with birds other than the local flock.