Sentence examples for crop milk from inspiring English sources

Similarly, prolactin stimulates secretions from the crop sac of pigeons ("pigeon" or "crop" milk), which are fed to newly hatched young.

The limitations of crop milk production also have doubtlessly set the limit to the maximum number of young that can be reared, so that no pigeon ever lays more than two eggs and many fruit eaters lay only one.

She learns that both male and female pigeons produce crop milk for babies; a pigeon population can quintuple in a year; pigeon dung contains saltpeter; the sex of individuals can't be determined until breeding season, when males puff their feathers and start herding a chosen mate (females "can be identified simply by their willingness to put up with it").

First, as with other Columbidae, pigeons feed their young with crop milk and they can reproduce throughout the year as soon as adults can obtain enough food (Johnston and Janiga 1995).

Thereafter, the crop milk is gradually augmented by seeds.

Mourning doves eat almost exclusively seeds, but the young are fed crop milk by their parents.

He thinks like a farmer, too, eager to talk for hours about the machines and implements used to sow, grow and harvest crops; milk cows; and raise and trade cattle.

Sale of crops, milk and off-farm activities contributed income in other households.

Gross margins were calculated as the difference between the outputs, such as crops, milk, goat kids and the inputs, for example, fertilizers, sprays, feed, vaccines, wormers and antibiotics.

China's exports decrease in the grain, vegetables and fruits, oil seeds, sugar, plant-based fibers, other crops, milk and dairy products, and fishery products sectors.

In its final experimental state, farm N use efficiency, expressed as the proportion of purchased crop fertilizers and cattle feed that was sold as exported products (crops, milk and cattle), was as high as 73%, Besides, total environmental losses were as low as 42 kg N ha−1 yr−1.