Q: We enjoy feeding the wild birds in our yard, and we have all sorts that frequent our feeders, but we now have a flock of pigeons that come twice a day. At first, there were only two, but it seems each day there are twice as many as the day before. They do not sit on the bird feeders but are on the ground under the feeders eating the food that the ground-feeding birds like song sparrows could be feeding on. In between feeding, they are on our roof making a mess. Is there any particular food that we could feed the other birds that the pigeons would not like?