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.
In ecology, a food chain is a series of organisms that eat one another so that energy and nutrients flow from one to the next. For example, if you had a hamburger for lunch, you might be part of a food chain that looks like this: grass â \rightarrow â right arrow cow â \rightarrow â right arrow human.