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Western olivaceous warbler facts for kids

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Western olivaceous warbler
Iduna opaca CDC image.jpg
Collected in Zouala, Morocco, April 2011
Conservation status
Scientific classification
Genus:
Iduna
Species:
opaca
Iduna opaca distribution map.png
Distribution of Western Olivaceous Warbler      Summer Resident (Breeding)      Winter Visitor
Synonyms

Hippolais opaca

The western olivaceous warbler (Iduna opaca) is a small bird, sometimes called the isabelline warbler. It belongs to a group of birds known as "warblers." These birds are part of the Iduna family, which includes tree warblers. For a long time, this bird was thought to be the same as the eastern olivaceous warbler. But now, scientists know they are different species.

Iduna opaca MWNH 1708
Eggs, Collection Museum Wiesbaden

This little bird is a type of passerine bird, which means it's a perching bird. You can find it in dry, open areas. It likes places with bushes or a few trees, even farms.

About the Western Olivaceous Warbler

What Does It Look Like?

The western olivaceous warbler is a medium-sized bird. It looks a bit like a very pale reed warbler. Adult birds have a plain light brown back. Their belly and underside are whitish.

They have a strong, pointed beak. Their legs are grey. Male and female warblers look the same. Young birds have a slightly more yellowish belly.

Where Does It Live?

This warbler breeds in Spain and Portugal and in north Africa. It is a migratory bird. This means it flies long distances. It spends its winters in Africa, south of the Sahara desert. Sometimes, it might fly by mistake to northern Europe.

Distribution in North Africa

In southeast Morocco, the western olivaceous warbler mostly passes through. It is a "passage migrant" there. However, it might also breed in some areas with thick plants.

How Is It Different from Other Warblers?

The western olivaceous warbler is bigger than the eastern olivaceous warbler. It also has a browner color on its back. Its beak is larger too. The song of this warbler is a fast, chattering sound. It sounds a bit like a nasal babble.

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