Comparative Breeding Behavior of Ammospiza caudacuta and A. maritima

A detailed field study explores the breeding lives of two closely related sparrows that share the marshes of New Jersey. By comparing the sharp‑tailed sparrow, which favors inland salt‑marsh habitats, with the seaside sparrow that inhabits coastal tidal zones, the work highlights how subtle ecological differences shape courtship, nest construction, and territorial behavior. The research fills a long‑standing gap in ornithological knowledge, offering a rare glimpse into the daily rhythms of these secretive birds during the spring and summer breeding season.

The author spent countless hours hidden in blinds, banding and even dye‑marking more than a hundred individuals to track their movements and parental roles. Precise measurements of weight, size, and nest success were taken with meticulous care, while observations were recorded through high‑power optics. Listeners will hear vivid accounts of how these sparrows select mates, defend their nests, and care for their young, revealing the intricate social world that unfolds in the marsh’s hidden corners.