@ Galeria de Colibrí y Soda Cinchona, Alajuela, Costa Rica
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Birds access different layers (strata) in an ecosystem to meet their food, nesting and shelter needs. In Costa Rica, the most frequently referenced stratifications include the following:
Air (swifts and swallows.)
Water (ducks and grebes)
Ground (quail and tinamou)
Understory
Subcanopy
Upper Canopy
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