Comparative crop milk composition in grantivorous and frugivorous Columbidae

Crop milk, a glandular secretion produced by doves, pigeons, and some species of penguins and flamingoes, was collected from five different species of dove squabs at the Memphis Zoo between day 0 and 14 post-hatching. These species (Ptilinopus jambu, Ptilinopus magnificus, Gallicolumba luzonica, Gallicolumba rufigula, and Streptopelia decaocto), range from primarily frugivorous to primarily granivorous representatives of Columbidae. The samples...

Columbiform crop milk and crop milk replacer

Altricial chicks undergo an intense period of growth in the first few weeks of life. These chicks’ huge needs for nutrients are usually met by their parents feeding them high protein food items such as insects, other invertebrates, or vertebrate prey. Columbiformes (doves and pigeons) have conquered this nutritional obstacle a different way, by manufacturing the perfect food for their...