Now, see, shrike doesn't look like a mockingbird to me at all, but no, hers are mockingbirds. She was trying to call a Phoebe a mockingbird, so I told her to listen, and watch the bird on the highline, and it was a Phoebe. She has a lot of mockingbirds tho, and the blue birds nested because of that snowfall we got late Feb...usually her bluebirds return to Mi before nesting, but as the snows were so brutal, the babies had gotten feathers on the wings...I attribute it to timing. I have no clue if there is a way to protect birds from other birds of the same size, tho I do fancy the tornado? baffle for the squirrels....