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Wednesday, August 21, 2019

the Barn Swallow - a worldwide aerial insectivore

Ph. by M. McMasters - Wikim. Commons



Barn Swallow is a bird nearly all rural people know: it is ubiquitous and widespread. It is in decline in some regions. See the animated eBird map (linked below) to watch its movement across North America through the seasons.

Declines are particularly marked in some areas of Canada. 


"Barn Swallow (Hirundo rustica) may be the most widespread and well-known passerine, with highly migratory populations that span the Americas as well as Europe, Asia, and Africa. Related species, and some Barn Swallow subspecies, are resident in Africa, the Middle East, and Australia. This remarkable variability makes Barn Swallow a great case study in migratory behavior. The varied migratory behaviors in this species globally are also seen on a smaller scale in the Americas, as this new eBird Abundance Model helps illustrate."

See the full hemisphere distribution at:


https://ebird.org/wi/science/barswa

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