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.
Introduction to aquatic food chains: The components which are involved in the transference of food energy from producers (plants) to the higher consumers (carnivorous animals) in the process of repeated eating and being eaten up is termed as food chain. A food chain is step-wise transfer of energy in the form of food.