My pigeons with the 4 squabs are down to 3. One disappeared into nowhere... just gone. Anyhow the 3 are growing good, always have full crops and then I noticed another pigeon who was not sitting on the nest, start feeding the babies... the 2 I thought were parents were just sitting to the side... watching? I've seen the one feeding the babys and sitting over them, the male I have not seen feed yet, but the other i haven't seen at all until today. Perhaps it is a female with 2 males trying for her attention ..... odd.