The Collared Flycatcher has a striking black-and-white coloration. The upperparts are predominantly black, while the underparts are entirely white. It gets its name from the white collar that breaks up the black coloring on the nape of the neck. In females and juveniles, the black is replaced by a light brown coloration.
The collared flycatcher is a model species for research on ecology and genetics. It was also one of the first bird species to have its genome fully sequenced.
| Order | Passerines |
| Family | Flycatcher |
| Distribution | Central and Eastern Europe, Western Asia; overwinters in southern Africa |
| Habitat | Mixed deciduous and riparian forests, open beech and oak stands |
| Food | Insects, Spiders |
| Activity | Starting in April in the breeding grounds |
| Weight | up to 19 g |
| Size | 12–13.5 cm |
| Service life | up to 8 years old |
| Reproduction | Male courtship ritual involving a lowered head and clattering sounds. Niche and cave nester. The incubation period averages 13 days. The young are fledged after another 2 weeks. |
| Risk | protected under Annex 1 of the EU Birds Directive |
| Enemies | Sparrowhawks, Falcons, Martens |