To catch birds and thrushes, small insects can be used as bait. Blackbirds like to eat small insects, and people use small insects to trap blackbirds very effectively.
A quiet approach is best with newly caught blackbirds. Cover the bird's cage with a piece of black cloth to screen out outside distractions. Let the blackbird stay quietly, and after a while it will peck at food and water. Then continue to cover it with a black cloth, and wait for the blackbird to slowly adapt to the environment.
When many people catch blackbirds, the first thing they think of is various grains. Because these foods are easy to get and birds generally like to eat them. But blackbirds like to eat meat, and when they are first caught, there must be delicious meat to lure them into eating.
