title: Resolving disputed subspecies distribution limits, and revealing intraspecific intergradation, in the Common Redstart Phoenicurus phoenicurus using citizen science and museum data
abstract: Abstract Contact zones with hybridization are documented for several Palearctic bird taxa. However, their extent is still poorly understood in many cases, including the Common Redstart Phoenicurus phoenicurus . Nominate P. p. phoenicurus breeds across most of the species’ range, whereas P. p. samamisicus is restricted to the south-eastern part. Their precise distributions are disputed as is the existence and prevalence of hybridization between them within potential contact zones in the Balkans, 
journal: Journal für Ornithologie