Crop (anatomy) Crop (anatomy) A crop (sometimes also called a croup or a craw, or ingluvies) is a thin-walled expanded portion of the alimentary tract used for the storage of food prior to digestion. This anatomical structure is found in a wide variety of animals. It has been found in birds, and in invertebrate animals including gastropods (snails and slugs), earthworms, leeches, and insects. Cropping is used by bees to temporarily store nectar of flowers. When bees "suck" nectar, it is stored in their crops. In a bird's digestive system, the crop is an expanded, muscular pouch near the gullet or throat.
The Handbook of Australian Sea-birds into their habits, and the problem of their conservation. The second part (Section V) of the book summarises what is known to date of the different species of birds in our region. Where there are adequate data each bird is described under the heads: Field Characteristics and General Habits; Status in Australia; Migration; Voice; Display; Breeding; Enemies and Mortality; Breeding Distribution.” The Handbook of Australian Sea-birds The Handbook of Australian Sea-birds is a book published in 1971 by A.H. & A.W. Reed in Sydney. It was authored by Dominic Serventy, his brother Vincent Serventy, and John Warham. It is in