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