Rookery

The rooks are raucously nest building up above son's village.
They used to nest in elm trees but those went, then they nested in ash trees but most of those have gone,  so now they nest in the sycamores.

It always strikes me as odd that these sunny, breezy, treetop nurseries were once a synonym for the squalid London slums where generations of impoverished, brutalised people lived and (barely) breathed and died.
(See here )

When we took the three year up there to get a better view she wasn't interested and was worried about nettles. She said she never wanted to go on that path ever again.
Later when her sister and a friend sprinted up to the same path to hide she couldn't get up there quick enough.

Extra: not a rook