Earlier colony arrival but no trend in hatching timing in two congeneric seabirds (Uria spp.) across the North Atlantic

Merkel B., Descamps S., Yoccoz N. G., Danielsen J., Daunt F., Erikstad K. E., Ezhov A. V., Grémillet D., Gavrilo M., Lorentsen S.-H., Reiertsen T. K., Steen H., Systad G.H., Þórarinsson Þ.L., Strøm H. 2019. Earlier colony arrival but no trend in hatching timing in two congeneric seabirds (Uria spp.) across the North Atlantic. Biology Letters 15:10 DOI: https://doi.org/10.1098/rsbl.2019.0634