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.
The transfer of materials and energy in the form of food from one trophic level to another trophic level by the repeated process of eating and being eaten is known as food chain. Three types of the food chain are grazing food chain, parasitic food chain, and detritus food chain. The number of food chains is interconnected to each other forming a network is called food web. Two type of food webs is terrestrial food web and aquatic food web.