Announcing the 2026–27 AOS Council

2026–2027 Officers & Executive Committee Morgan Tingley, President (2026–2028) (elected in 2024 as President-Elect)Daniel Cadena, President-Elect (2026–2028)Sushma Reddy, Secretary (2022– )Matthew Carling, Treasurer (2021– )Judith Scarl, Executive Director and CEO, …

Bouncing back, but still losing chicks: The puzzle of partial brood loss

When I started studying Dryobates borealis (Red-cockaded Woodpecker), I expected that one of the biggest challenges families faced would be competition at high population densities. After all, as conservation efforts helped these birds rebound across the Southeastern United States, many sites saw more groups packed into the same landscape than ever before.

The songs and genes of Marsh Wrens tell of two species in North America

Since the late 1980s, we’ve known of an abrupt transition in Marsh Wren singing styles across the Great Plains of the United States. To the west of the transition zone, songs are harsh, grating, and highly variable, with each male having a large repertoire of up to 150 different songs. To the east, songs are semi-musical and far more homogeneous, and males learn only about 50 different songs.