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These neurons also fire in similar patterns when the bird is singing that same song. Swamp sparrows employ 3–5 different song types, and the neural activity differs depending on which song is heard or sung. The HVC X neurons only fire in response to the presentation (or singing) of one of the songs, the primary song type. They are also ...
The common blackbird (Turdus merula) is a species of true thrush. It is also called the Eurasian blackbird (especially in North America, to distinguish it from the unrelated New World blackbirds), [2] or simply the blackbird where this does not lead to confusion with a similar-looking local species.
A European robin singing at dawn. The dawn chorus is the outbreak of birdsong at the start of a new day. In temperate countries this is most noticeable in spring when the birds are either defending a breeding territory, trying to attract a mate or calling in the flock.
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The song is given as "loud, clear, and melodic, a ringing 'cleer-cleer-clur, clulululu'." Calls are simpler but have a similar quality. [2] Scarlet-headed blackbirds occur in pairs in large reed beds in Argentina, Paraguay, Uruguay and southern Brazil; Bolivia has an isolated population living at an altitudes of about 600 m. They often perch ...
Brewer's blackbird (Euphagus cyanocephalus) is protected in the United States under the Migratory Bird Treaty Act of 1918, [10] however exceptions are granted under 50 CFR part 21 (2014) [11] for animals committing or about to commit depredations upon ornamental or shade trees, agricultural crops, livestock, or wildlife, or when concentrated in ...
The tricolored blackbird (Agelaius tricolor) is a passerine bird of the family Icteridae. Its range is limited to the coastal areas of the Pacific coast of North America, from Northern California in the U.S. (with occasional strays into Oregon ), to upper Baja California in Mexico.
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