We're sure that one of these two jackdaws is an avian estate agent trying to sell the other bird the concept of making a move and building a nest down the single chimney. Just a thought but why is it that jackdaws are the only corvid that seem to nest in chimneys?
I remember as a child that the estate gamekeeper had a tame jackdaw that used to follow him everywhere. The bird lived in the house as a pet with his own perch in the living room or kitchen and was tolerated by gun dogs, ferrets and cats and he lived to a good age before dying of natural causes in the conservatory. For those who are interested he was found on his back, wings folded and claws in the air, a sad day and bit of a Cluedo mystery really.
Looking at that sky it could be a good idea to get the nest built and make the chimney on this derelict house weatherproof. There's nothing worse than wet feathers.