Birds

Winter wren

Troglodytes hiemalis

The winter wren is a tiny North American bird with a stubby body and cocked tail, famous for a long, crystalline song.

Characteristics

Scientific nameTroglodytes hiemalis
LifespanFino a 6–7 anni
SizeLength 8–12 cm
Energy4/5

Temperament

Shy, hyperactive, great singer

Diet

Insectivore: small insects and spiders

Description

The winter wren is one of North America's smallest birds, a tiny passerine with a stubby, rounded body, dark brown and finely barred, with the characteristic short tail often held cocked upward. Its bill is slender and slightly curved. Despite its small size, it has a surprisingly powerful voice.

Habitat and distribution

It is native to eastern North America, where it breeds in dense, damp coniferous and broadleaf forests, often near watercourses. It favours habitats rich in undergrowth, fallen logs and brush piles, through which it moves furtively. In winter many populations migrate south.

Behaviour

It is a shy, hyperactive bird that spends much of its time rummaging through leaf litter and rotting wood in search of small insects and spiders. Until 2010 it was considered the same species as the Eurasian and Pacific wrens, from which it was later split on the basis of song and genetics.

The song

Its song is its most extraordinary feature: a long, rapid, complex series of silvery notes and trills that can last several seconds. For its size, it produces one of the highest sound volumes relative to body weight of any bird.

Conservation

It is classed as least concern. It does, however, depend on mature forests with abundant dead wood and dense undergrowth: forestry that retains these features favours its populations.

Pros

  • Long, crystalline song, surprisingly powerful
  • Useful predator of small insects
  • Lively and fascinating to watch

Cons

  • Very shy, often hidden in undergrowth
  • Depends on forests with abundant dead wood
  • Hard to tell apart from related species

FAQ

Is it the same wren that lives in Europe?
No. Until 2010 it was considered the same species as the Eurasian wren, but studies of song and genetics led to their separation. The winter wren lives in eastern North America.
Why does it hold its tail cocked up?
It is a posture typical of wrens, which often hold their short tails upright. Together with the stubby body and nervous movement, it is one of the traits that make these little birds unmistakable.
What is its song like?
It is a long, rapid, crystalline series of notes and trills that can last several seconds. Relative to its tiny size, it produces one of the most powerful songs in the bird world.
Where does it hide?
It frequents dense undergrowth, leaf litter, fallen logs and brush piles in damp forests, where it moves furtively searching for insects. It is easier to hear than to see.

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