The Garden Warbler breeds in Europe and migrates south of the Sahara for winter. Its upperparts are brown and its underside is pale.
It has brown to grey-brown upperparts and pale underparts, with little striking patterning.
Garden warblers cross the Mediterranean and Sahara on their autumn migration. On Crete, researchers estimated average stopovers of 16 days for first-year birds and 14 days for adults. They tracked 77 birds with transmitters and used body mass from birds caught in fig trees to estimate the fuel stored before departure.
Some adults moved far from the release point; one was found 17 kilometres away. Nine birds were recaptured in the same area during a later autumn, showing that some returned to the region. Both age groups left with fat stores close to their fat-free body mass. Garden warblers feed on fruit while building the energy needed for the long crossing over sea and desert.
An extinction-risk assessment has not been added yet.
On Crete, garden warblers stayed about 14–16 days before the Sahara crossing and fed on fruit while building fat reserves. Birds were also recaptured there in a later autumn, documenting a repeatedly used stopover region.