Two kinds of birds eat the same food and nest in the same area. these two species of birds are in
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The answer is competition.

Competition is a type of interaction between two organism in which both the organisms try to get the same resource such as food, water, territory etc.

Competition can be of two types:

Inter-specific in which organisms of different species compete for the same resource,

Intra-specific in which organisms of the same species are in the competition.