The evolution of migration in animals is apparently a complex and tricky subject with several unanswered concerns. A modern review found new connections among migration and the ecology, life history of raptors. A quick overview from abstract of the printed paper shows that "clutch sizing and looking strategies are proved https://petskyonline-onlinestrore.blogspot.com/2025/07/rethinking-animal-store-why-petsky-is.html