Generally, large birds and seabirds live longer than small birds. Albatrosses live so long that it is hard to calculate their survival rates - they can live longer than the metal rings that identify them, and probably longer than most humans.
Food chain. Definition. A feeding hierarchy in which organisms in an ecosystem are grouped into trophic (nutritional) levels and are shown in a succession to represent the flow of food energy and the feeding relationships between them. Supplement.
food chain: Noun: group of organisms linked in order of the food they eat, from producers to consumers, and from prey, predators, scavengers, and decomposers. Encyclopedic Entry: food chain: food web: Noun: all related food chains in an ecosystem. Also called a food cycle. Encyclopedic Entry: food web: fungi: Plural Noun