They saw a variety of birds, such as swallows, skylarks and chiffchaffs.
In contrast to the chiffchaff 's repetitive, rather tuneless ditty, the willow warbler sings a musical, plaintive tune.
In recent years the winters there have been so warm that many chiffchaffs no longer migrate.
We stood beneath the trees and heard our first chiffchaff of the year: "Chiff-chaff-chiff-chaff-chiff-chiff-chaff."