Learning the Hard Way: Imprinting Can Enhance Enforced Shifts in Habitat Choice

Figure 3

Proportion of coniferous versus deciduous tree species in the breeding territories of pied flycatcher pairs (PF) compared to the breeding territories of male pied flycatchers paired to a female collared flycatcher (PFCF) on the Swedish island of Öland, 2002–2010. Male pied flycatchers have a lower risk of hybridizing in habitats with coniferous forest. Sample sizes are given above the bars.