Environmental correlates and functional consequences of bill divergence in island song sparrows
M. P. Gamboa, C. K. Ghalambor, T. S. Sillett, W. C. Funk, R. A. Furbush, J. F. Husak, R. M. Danner
The paper investigates the environmental factors shaping bill morphology in song sparrows, finding a correlation with climate rather than foraging efficiency.
bioRxiv · Sep 15, 2021 · PreprintEcology