Wiebe, K. L., K. I. Jönsson, J. Wiehn, and H. Hakkarainen. 2000. “Behaviour of Female Eurasian Kestrels During Laying: Are There Time Constraints on Incubation?”. Ornis Fennica 77 (1):1–9. https://ornisfennica.journal.fi/article/view/133519.