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.
Memorandum of Understanding on the Conservation of Migratory Birds of Prey in Africa and Eurasia Memorandum of Understanding on the Conservation of Migratory Birds of Prey in Africa and Eurasia The Memorandum of Understanding on the Conservation of Migratory Birds of Prey in Africa and Eurasia (Raptors MoU) is an international, legally non-binding agreement to protect migratory birds of prey. Hawks, eagles, and falcons can function as indicator species of the ecological condition of a region. As they are at the top of the food chain, these species may be among the first to be affected by environmental pressures such as drought, habitat degradation, and the use of pesticides. Monitoring the population trends of birds