Help
The wife and I were in the house, and we thought our dog was squeaking her squeaky ball in the garden, when the wife looked out, there was a brown bird, slightly larger than a pigeon with a brown crested head, on the lawn making a call, another of the same breed was responding airborne. The dog thought it was her ball, and raced into the garden, so the bird took off, we have heard them since, but have no idea what breed they are, anyone know?