Sentences with phrase «blackcaps migrate»

Not exact matches

Schaefer's team also found that German blackcaps wintering in the UK possess browner plumage on their backs, rounder wings and pointier beaks than blackcaps that migrate south.

The United Kingdom is closer to blackcap breeding grounds in central Europe than is Spain, so the northwest - migrating birds return home 10 days earlier and start mating among themselves.

Whether blackcaps will eventually diverge into different species depends on the fitness of offspring from crosses between northwest - and southwest - migrating birds, says evolutionary biologist Darren Irwin of the University of British Columbia, Vancouver, in Canada.