LITERATURE. — Bannerman (1931); Holyoak & Seddon (1989); Thonnérieux et al. (1989); Dowsett (1993); Balanca & de Visscher (1997); Borrow & Demey (2001, 2014); Balanca et al. (2007); Sinclair & Ryan (2010); Dowsett et al. (2013).
FIELD DATA. — eBird; GBIF; WABD; XC.
STATUS. — Resident; Breeding.