Treecreeper (Certhia familiaris)
Savi's Warbler (Locustella luscinioides)
Unmistakable, except in areas where it coexists with Short-toed Treecreeper. Differs from said species in pure white flanks (sub-species macrodactyla has faintly buff flanks but not as marked as in Short-toed), shorter and only moderately curved bill, hind-claw as long as hind-toe and "notched" wing-bar (uneven "steps"). Tips of primaries with buffish/white tips/fringes extending along inner web. Mostly distinguished from Short-toed by call, and identification exclusively by plumage characters difficult in areas where both species occur.
Sound:Contact call a drawn, high-pitched "tzreeee". Similar to Goldcrest in timbre, but of longer duration with a vibrating and slightly rolling tone. Generally repeated in evenly paced, slow series (unlike Goldcrest). Song a short, continuous three-part phrase. Each phrase starts with a few contact call-like notes followed by a Willow Warbler-like descending part, which then jumps to a few descending high notes to form a marked conclusion. Note that "mixed singers" are not uncommon in areas where both species of treecreepers occur.
Song:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCReedbed-living, dull coloured warbler with fan-shaped tail. Under tail coverts lacking pale fringes or markings. Vague and short supercilium. Differs from other locustella by unstreaked chest, back and under tail coverts. From Reed Warbler and Marsh Warbler by very long and buff under tail coverts, smaller head and pinkish legs.
Sound:Song insect-like and high-pitched. A monotonous stream of even clicks similar to the whirring of a sewing machine. Song most similar to Grasshopper Warbler but faster (each click hard to distinguish), and lower pitched with less, ringing quality, due to less prominent high frequencies. At closer range a Robin-like, accelerating ticking is heard, introducing the actual song.
Song:
Distribution:
Xeno-canto: map
Ecology:Birdlife ecology
Links:
Observation.org Latest observations
Image search Flickr NB! May give other species
CCCC-photo:sussexbirder, Licence,Link.