The semicollared flycatcher (Ficedula semitorquata) is a small passerine bird in the Old World flycatcher family, one of the four species of Western Palearctic black-and-white flycatchers. It breeds in the southeastern corner of Europe, the Middle East and southwestern Asia. It is migratory, wintering in Central and Eastern Africa. It is a rare vagrant in western Europe. Tracking studies using geolocators have revealed that weather conditions during spring migration can have a large impact on the timing of Semicollared flycatcher migration and survival of adult birds.
The breeding male is mainly black above and white below, with a white half-collar, extending further back than in pied, large white wing patch, extensively white tail sides and a large white forehead patch. It has a pale grey rump. The bill is black and has the broad but pointed shape typical of aerial insectivores. It mainly takes insects in flight, rarely hunting caterpillars amongst the tree foliage like pied flycatcher.
Non-breeding male, females and juvenile semi-collared flycatchers have the black replaced by a pale brown, and may be very difficult to distinguish from other Ficedula flycatchers, particularly the collared flycatcher. A distinction is that semicollared may show a white second wing bar, but many individuals are not separable in the field.
Semicollared flycatchers are birds of belts of deciduous woodlands, especially oak and hornbeam, in mountainous areas. They build an open nest in a tree hole, and 4-7 eggs are laid. The song is again intermediate between collared and pied flycatchers, with slow strained whistles, but some rhythmic elements.
- BirdLife International (2015). "Ficedula semitorquata". IUCN Red List of Threatened Species. Version 2015. International Union for Conservation of Nature. Retrieved 26 January 2016.
- Briedis, M.; Träff, J.; Hahn, S.; Ilieva, M.; Král, M.; Peev, S.; Adamík, P. "Year-round spatiotemporal distribution of the enigmatic Semi-collared Flycatcher Ficedula semitorquata". Journal of Ornithology. 157 (3): 895–900. doi:10.1007/s10336-016-1334-6.
- Briedis, M.; Hahn, S.; Adamík, P. "Cold spell en route delays spring arrival and decreases apparent survival in a long-distance migratory songbird". BMC Ecology. 17 (11). doi:10.1186/s12898-017-0121-4.
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