Periparus ater
Appearance like a small Great Tit in black and white. Back led-grey (olive in British sub sp.), underparts off-white. Diagnostic elongated, white neck-patch and big triangular bib. Double wing-bars, small head and short tail.
Song: Various repeated motifs, consisting of two to three notes with alternating accents. Slightly similar to Great Tit, but faster, not so metallic and with a less full tone. Can be mistaken for Marsh Tit when singing single or double notes, but tone is softer and notes more clearly separated (if disyllabic). Call: short soft and clear "piu", first rapidly rising and then falling in pitch.
Wikipedia: map (se also Xeno-canto below)
Birdlife ecology
