Knight, S. M., Gow, E. A., Bradley, D. W., Clark, R. G., Bélisle, M., Berzins, L. L., Blake, T., Bridge, E. S., Burke, L., Dawson, R. D., Dunn, P. O., Garant, D., Holroyd, G. L., Hussell, D. J. T., Lansdorp, O., Laughlin, A. J., Leonard, M. L., Pelletier, F., Shutler, D., Siefferman, L., Taylor, C. M., Trefry, H. E., Vleck, C. M., Vleck, D., Whittingham, L. A., Winkler, D. W., & Norris, D. R. (2019). nonbreeding season movements of a migratory songbird are related to declines in resource availability. Auk, 136, . http://access.bl.uk/ark:/81055/vdc_100094054602.0x000062