10 images Created 6 Feb 2013
Dartford warbler winter
Dartford warbler (Sylvia undata) on frost and snow covered heathland. Surrey, UK. In the severe winter of 1962/63 the Dartford warbler (Sylvia undata) was almost wiped out in Britain - the national population dropped to just 10 pairs. But in good breeding seasons and with suitable habitat its numbers are capable of bouncing back, thanks to repeated nesting and high survival rates among its offspring.