Where does the Sabine’s Gull exclusively breed in the high Arctic tundra?
Answer
Coastal areas, low islands, and wet areas near brackish or freshwater pools.
The breeding specialization of the Sabine’s Gull is intrinsically linked to its environment; it is an obligate breeder of the high Arctic tundra. Specifically, the species selects nesting sites that include coastal regions, small islands, and damp areas characterized by either brackish water or freshwater pools, all situated above the tree line. This preference dictates the short-season resources, like insects or small prey, that must sustain the chick-rearing phase, driving the initial specialization of the species.

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