During this early stage, they are entirely dependent on their parents, who feed them a unique substance called “pigeon milk.” Produced in the parent’s crop, this milk is nutrient-rich and ...

For the first week, their diet consists exclusively of "pigeon milk"—a nutrient-rich secretion produced by the parents' crop ...

Anyone who knows their science lessons from school will tell you that only mammals are capable of producing milk, but that’s not quite the case. Image caption, Pigeons produce a fluid for their ...