Birds can digest fermented dairy products, such as cheese. Mild grated cheese can be a good way of attracting robins, wrens and dunnocks. Warning: never give milk to any bird. A bird's gut is not designed to digest milk and it can give them serious stomach upsets or even kill them.
Is milk safe for birds?
Dairy. Although not technically toxic, studies show that birds cannot digest lactose, which is found in milk and other dairy products. As the amount of dairy in the diet increases, birds can develop diarrhea.
Is milk good for pigeon?
Although milk is exclusively a mammalian production, some birds, such as pigeons, penguins and flamingos, produce a milk-like substance which provides similar benefits to their young. Both female and the male pigeons produce it in their crop, and like mammalian milk production is controlled by the hormone prolactin.