Aquatic Warbler

Aquatic warbler

Scientific name: Acrocephalus paludicola

Did you know: The Aquatic Warbler is Europe’s most threatened and the only globally threatened passerine bird found in mainland Europe.

What Do Aquatic Warblers Look Like? (how to identify them)

Aquatic Warblers are striking medium-sized birds, characterised by their heavily streaked brown backs and pale underbellies adorned with varying streaks. A notable feature is their flattened foreheads, coupled with strong, pointed bills.

They possess a prominent white supercilium and a distinctive crown stripe. Juvenile birds exhibit less streaking on their breasts, setting them apart from adults. This species’ plumage allows it to blend seamlessly into its wetland habitats.

Differences Between Male and Female Aquatic Warblers

Interestingly, male and female Aquatic Warblers share a similar appearance.

This is typical for warblers, where sexual dimorphism in plumage is not pronounced. Both genders exhibit the same pattern and coloration, making them indistinguishable based on looks alone.

What Do Aquatic Warblers Eat?

Primarily insectivorous, Aquatic Warblers feast on a lot of different insects such as beetles, flies, moths, caterpillars, and grasshoppers.

They also eat spiders and occasionally, other small invertebrates like snails or worms. During the breeding season, they intensify their consumption of spiders and insects to provide protein-rich nourishment to their chicks.

Where Do Aquatic Warblers Live? (inc. migration info)

Aquatic Warblers are migratory birds, breeding in the temperate regions of eastern Europe and western Asia. A significant portion, about 70%, of their global population is found in the Polesie region of eastern Poland and south Belarus.

They migrate to west Africa for wintering, with a large number finding refuge in the Djoudj National Bird Sanctuary in Senegal. They favor wet sedge beds with shorter vegetation for their habitats. The bird’s migration path includes regular passages through Great Britain and Ireland.

Bird Calls & Songs (the unique voices of Aquatic Warblers)

The song of the Aquatic Warbler is a distinctive, fast-paced chattering, interspersed with typical acrocephaline warbler whistles. This vocalisation is not just melodious but also serves as a key characteristic for identifying these birds, especially during their breeding season.

Fun Aquatic Warbler Facts (kid friendly)

  • The Aquatic Warbler is the rarest passerine bird in mainland Europe.
  • They lay 3-5 eggs, which are brown and densely spotted.
  • This bird has a unique south-westerly migration route to West Africa.
  • They have a spiky tail and a sandy-colored crown.
  • Aquatic Warblers are known for their agility, often seen gripping two stems at once.
  • Juvenile Aquatic Warblers can be identified by their less streaked breast.
  • Their diet is mostly insects, helping control insect populations in their habitats.
  • Aquatic Warblers are known for being highly promiscuous.
  • Conservation efforts for these birds include habitat restoration and regulation of water levels.
  • These birds are so elusive that their West African wintering grounds were only discovered in 2007.

Facts About The Aquatic warbler

Diet: Insects, grubs, caterpillars and spiders.
Bird Family: Warblers
Length: 13cm
Wingspan: 16.5-19.5cm
Weight: 10-14g
Scientific Name: Acrocephalus paludicola

The Aquatic warbler Can Be Seen In The UK During The Following Months

  • August

Aquatic warbler Images

Male Aquatic warbler Male
Female Aquatic warbler Female
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