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Why do procellariiform birds gather near the Antarctic Convergence?
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Procellariiform
Black-browed albatross (Diomedea melanophris).
Procellariiform birds gather near the Antarctic Convergence primarily because it is a highly productive biological zone that provides an abundant food supply.12
The region, located between 40° and 60° south latitude, features a zone of upwelling water that is exceptionally rich in shrimplike krill, a vital food source for many seabirds. Because these birds depend heavily on pelagic crustaceans, they are drawn to these windy, nutrient-rich latitudes to feed. This convergence acts as a significant biological boundary, creating a "larder of the sea" that supports a wide variety of species, including surface-feeding tubinares, prions, and diving petrels.213