Seeking smarts: Male chickadees with better spatial cognition sire more extra-pair young
Carrie L. Branch, Benjamin R. Sonnenberg, Joseph F. Welklin, Bronwyn G. Butcher, Virginia K. Heinen, Angela M. Pitera, Lauren M. Benedict, Eli S. Bridge, Irby J. Lovette, Michael S. Webster, Правосудов Владимир Витальевич
The paper finds that male chickadees with better spatial cognition sire more extra-pair young and produce heavier offspring, supporting the good genes hypothesis.
bioRxiv · Sep 30, 2025 · PreprintAnimal Behavior & Cognition