Jeff Martin and Charlotte Kruger’s new paper has appeared in which they show that over-winter temperature can modulate the onset of reproduction in photostimulated  black-capped chickadees.

Martin, R. J., Kruger, M. C., MacDougall-Shackleton, S. A., & Sherry, D. F. (2020). Black-capped chickadees (Poecile atricapillus) use temperature as a cue for reproductive timing. General and Comparative Endocrinology, 287. doi:10.1016/j.ygcen.2019.113348