Feral Chimney Bees Apis mellifera

Next door's reduced chimney
Feral honey bees in chimney
Feral honey bees using airbrick in chimney
The tall, ornate, disused chimney on the house next door was deemed a safety hazard and reduced to a few feet, topped with paving slabs and a couple of side airbricks. It didn't take long for a feral swarm of Honey Bees to move in -- they and their relatives stayed a couple of decades.
Feral honey bees swarming
Feral honey bees swarming
Feral honey bees swarming
Sometimes they swarmed . . .
Feral honey bees swarming
and the sky was full of fast-moving bees
Feral honey bees swarming
Feral honey bees settling back into chimney
Then they would settle back home again -- or another colony moved in.