© Copyright: Images: Jari Peltomäki, M. & W. von Wright: Svenska fåglar (Kansalliskirjasto, The National Library of Finland). Recording: Jan-Erik Bruun. All rights reserved.
- Family: Warblers – Sylviidae
- Appearance: A fairly sturdy warbler, with no distinctive markings on plumage. Upper parts greyish brown, underparts brownish white. Beak fairly short, grey with a pale base. Legs pale greyish, fairly sturdy.
- Size: Length 13–14.5 cm, weight 15–27 g.
- Nest: In a low bush or among grassy vegetation usually less than a metre above the ground (though may be up to 2.5 metres high). Large, made of carelessly piled together dried plant stems, lined with fine straw, hair and root fibres. Does not use spider’s web to bind nest. Male may build several nests during courtship for the female to choose from.
- Breeding: 3–6 eggs laid May–June, incubated by both parents for 11–12 days. Fledglings remain in nest for 9–11 days.
- Distribution: Breeds in mixed and deciduous woodland throughout Finland, though scarcer in the north. Finnish breeding population estimated at 800,000–1,200,000 pairs .
- Migration: Nocturnal. Flies south August–September, returning May–June. Winters in tropical Africa.
- Diet: Invertebrates, berries.
- Calls: A fairly loud, clear “dyvet dyvet dyvet”. Song a lengthy, babbling warble.
Garden Warblers are greyish brown above, with brownish white underparts, and have no distinctive features on their plumage. They can best be distinguished from other warblers by their fairly stocky body shape, their short, sturdy beaks, and fairly sturdy, greyish brown legs. Their beaks are grey, with a paler base to the lower mandible, and they have dark brown irises.