I have heard bird banders tell of how birds of prey have tried to catch the song birds caught in their mist nets.
Birds of prey regularly frequent bird feeders to catch the smaller birds that come for the seeds.
Here in Northeast Ohio the gulls follow the big ore boats up the Cuyahoga River in winter because the propellers chop up and stun the fish. It’s easy food for them. In fact, they are very picky about which fish they catch preferring the ones that are still alive.
Animals can learn to take advantage of such situations.