Icterine Warbler
Hippolais icterina
A fairly big warbler with a large head, broad-based bill and long wings with a quite short square-ended tail. The upperparts are greyish-green and the underparts are uniformly light yellow. It has pale lores and a rather vague yellowish supercilium with a pale eye ring. Other distinguishing features include a panel on the folded wings formed by pale edges to the secondary feathers and tertiary feathers and the grey, sometimes bluish legs. Voice: The song is a fast nasal babbling incorporating mimicry of other species. The call is described as teck or tec, tec, tec.
ID text from Wikipedia, CC BY-SA 4.0
Olive-tree Warbler
Hippolais olivetorum
The olive-tree warbler is a relatively large warbler species with a long, thick bill which has on obvious orange -yellow lower mandible. The upperparts are pale olive-grey in colour, with a noticeable pale wing panel, while the underparts are mostly whitish. The tail is long and dark grey in colour. It is 18 cm (7.1 in) in length, with a wingspan of 24 to 26 cm (9.4 to 10.2 in) and weighs between 19 and 23 g (0.67 and 0.81 oz). Voice: The olive-tree warbler's call is a deep "chack" note, the song is a fast, gruff and loud, with a cyclical repetition of chacking sounds, interspersed with softer sounds.
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: Icterine Warbler and Olive-tree Warbler.