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Unlike most shorebirds, the Upland sandpiper is completely terrestrial, rarely associated with coastal or wetland habitats, an obligate grassland species. As a result, it is often recognized as an indicator of prairie health.
Adult curlews will vigorously chase and attack potential nest or chick predators including coyotes, raptors, and people. Adults become more aggressive towards predators as their eggs begin to hatch.
In spring, males attract females by stamping their feet rapidly and making booming sounds with their air sacs. They often leap into the air with loud cackles.
The grasshopper sparrow is one of the few North American sparrows that sings two completely different songs during the breeding season: one to attract females and one to defend a territory.
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