This is bizarre, especially this bit: "Crop milk is a holocrine secretion, unlike in mammals where milk is an exocrine secretion." In which Holocrine secretio

This is bizarre, especially this bit: "Crop milk is a holocrine secretion, unlike in mammals where milk is an exocrine secretion." In which Holocrine secretions are "[..] produced in the cytoplasm of the cell and released by the rupture of the plasma membrane, which destroys the cell and results in the secretion of the product into the lumen."[1] [1] https://en.wikipedia.org/wiki/Holocrine https://en.wikipedia.org/wiki/Holocrine