What's wrong with the three treasures of birds sticking shit

Three treasures of birds may be eaten unclean, or they may be sick. They need to replace food or treat them in time.It often hovers when foraging, and then quickly rushes to the prey. After catching it, it will be rarely staying on the ground for food.This bird is mainly inhabited in the forest area. Except for some areas in the south, there are summer migratory birds.