If blackcaps wintering there fare worse than their counterparts in the United Kingdom or Spain, the «selection against [these birds] could promote further divergence between the two groups,» Irwin says. (sciencemag.org)
In the past 50 years, a migratory schism has appeared among central European blackcaps (Sylvia atricapilla). (sciencemag.org)
At 45 - 65 ft, divers can find small schools of blackcap basslets close to or under the overhangs. (ambergrisCaye.com)