Willow Warbler

Phylloscopus trochilus

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Brief #

Greenish brown above and off-white to yellowish below; the wings are plain greenish-brown with no wingbars.

Synonyms #

  • Mosquitero musical (Spanish)
  • Picafollas cantor (Galician)

Red List Status #

The Willow Warbler is unlikely to become extinct in the near future.
Find out more about IUCN's Red List program here

Description #

Greenish brown above and off-white to yellowish below; the wings are plain greenish-brown with no wingbars. Juveniles are yellower below than adults. It is very similar to the chiffchaff, but non-singing birds can be distinguished from that species by their paler pinkish-yellow legs (dark brown to blackish in chiffchaff), longer paler bill, more elegant shape and longer primary projection (wingtip).

Measurements #

Length: 11 - 13 cm
Wingspan: 16 - 22 cm
Weight: 7 - 15 g

Similar species #