I don't know if you can get to the birds. If you can, I usaly go in the night and bring a bright flashlight locate the birds you want. Move as closely as you can, once your 10 feet or so away. Turn your beam on them move closer turn on off on off every 3 second be moving closer every time. Once you close enough to make a catch keep the light on them then ether shut it off hold still then blind it with light and grab your bird. Or the second you turn off the lights grab your bird. That what I do. But watching the pattern of the birds is a big part to catchING see where is the place thay feed and drink most often. Traps I haven't had luck with. When I was 10 used a cardboard box. Propped it up with a stick tide a string to the stick. Bate with wheat when a pigeon comes to eat I would pull on the string and the box would fall and trap the bird.that might be what your grand daughter could try.