Rook on a cable

I was playing a game and heard a lot of loud cawing outside that sounded a bit "off", i.e. not like the cawing of the regular crows.

Therefore, I decided to look outside and saw this rook perched on a cable right next to my window!

Its beak is probably slightly open because of the heat. If I remember correctly, this is how bird's try to dissipate heat (their form of "panting", I guess) since they cannot sweat.