Dutch pied flycatchers raised in Sweden wintered about halfway between the usual Dutch and Swedish sites in West Africa, pointing to both inheritance and natal environment. doi.org/hb8qb4
Why these birds meet again in Africa: Flycatcher study reveals how genes and environment guide 13,000‑km migrations
Migratory birds such as the pied flycatcher typically have wintering locations in Africa close to others from the same breeding population.
phys.org