1882 2 217 Our rookeries and favourite rook-roosts,..are, comparatively speaking, deserted.
1937 J. W. Day 88 The great rook-roosts of winter, the annual nightly gatherings of thousands of these birds, are breaking up.
2007 (Nexis) 17 Jan. Dozens of birdwatchers turned out at the weekend to watch 80,000 birds form part of the largest rook roost in Europe.