Time to fly the nest.

Fantastic sight today of 20-30 House Martins swarming to the two nests on my house, each had two chicks still inside (must be second broods) Some birds would fly up and cling to outside of  nests whilst other clung to the wall or hovered very close by.  All birds calling loudly trying to entice the chicks out.

Unfortunately all evaded my nearby net!