Dartford Warbler
Curruca undata
The Dartford warbler is a small, 13 cm (5.1 in), passerine bird, distinguished by its long tail compared with that of other warblers. Its plumage comprises unobtrusive and muted tones, which blend in with the dry dead plants, old wood or sunny greyish wood found in its preferred habitats. Like many typical warblers, the Dartford warbler has distinct male and female plumages. The male has a grey back and head, reddish underparts, and a red eye. The reddish throat is spotted with white. The sides are a dull greyish tone, being more clear about the abdomen.
ID text from Wikipedia, CC BY-SA 4.0

Western Orphean Warbler
Curruca hortensis
At 15–16 centimetres (6–6+1⁄4 in) in length – somewhat larger than a blackcap – this is one of the largest species of typical warblers. The adult males have a plain grey back and whitish underparts. The bill is long and pointed and the legs black. The male has a dark grey head, black eye mask, and white throat. The iris is white. Females and immatures have a paler head and buff underparts; their grey back has a brownish tinge. The iris is dark in young birds. The song is a series of warbling liroo-liroo and scolding notes.
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Dartford Warbler and Western Orphean Warbler.