Nesting Birds

I am thrilled to have so many birds nesting in mine and my neighbors yards this summer. My neighbor has a dove nesting in a purple leaf plum tree in her yard. In my yard we have a pair of flycatchers nesting in the cottonwood by the hay shed, and a pair of sparrows in a corner of the hay shed that makes it impossible to see the nest. The other day I discovered a pair of hummingbirds were nesting in the Bradford pear tree that is right outside my front door. I put out lots of water for the birds but don't put out any food for them. I am afraid of making them to dependent on me for food and bringing in other species of birds that I really don't want. But when I found the hummers nesting I went and bought two hummingbird feeders and hung them up since I couldn't figure out where the little birds were getting any food as there are only a few wildflowers blooming in my area at this time. I don't think there is enough to support these two little birds. So far I haven't seen them feeding from the feeders but hope they find them soon as they will need them when they start feeding chicks. Here are some photos of the birds.