# Swallow numbers

**URL:** <https://forum.inaturalist.org/t/swallow-numbers/15546>\
**Category:** Nature Talk\
**Created:** [August 18, 2020, 2:01pm UTC](https://forum.inaturalist.org/t/swallow-numbers/15546 "2020-08-18T14:01:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mamestraconfigurata](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/mamestraconfigurata/32/10149_2.png) [@mamestraconfigurata](https://forum.inaturalist.org/u/mamestraconfigurata)\
**Post date:** [August 18, 2020, 2:01pm UTC](https://forum.inaturalist.org/t/swallow-numbers/15546/1 "2020-08-18T14:01:45Z")

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Asking for a friend! A person on a Facebook bird page I’m part of posted this - “Most years, here on the Olympic Peninsula, we have a tremendous invasion of swallows in the spring (at our house, mostly Tachycineta bicolor,  
T. thalassina, and Hirundo rustica). But 2020 numbers at our house were unusually low; and by August they’d already all vanished.” He was wondering if something was going on that he had missed. Has anyone got any information/ideas? Olympic Peninsula is near Seattle, for those - like me - who don’t know.

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**Author:** ![intyrely\_eco](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/intyrely_eco/32/10892_2.png) [@intyrely\_eco](https://forum.inaturalist.org/u/intyrely_eco)\
**Post date:** [August 18, 2020, 2:22pm UTC](https://forum.inaturalist.org/t/swallow-numbers/15546/2 "2020-08-18T14:22:48Z")

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A short article on this,  
[https://theplanetmagazine.net/hard-to-swallow-dd9ec2a88de1](https://theplanetmagazine.net/hard-to-swallow-dd9ec2a88de1)

And if you’re interested in the science they’re discussing, there are a few open access articles on [Google Scholar](https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&q=decline+washington+swallow&btnG=) on the subject, including  
[https://harvest.usask.ca/handle/10388/ETD-2012-12-816](https://harvest.usask.ca/handle/10388/ETD-2012-12-816)  
[https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0129340](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0129340)  
[https://academic.oup.com/auk/article/131/3/351/5148974](https://academic.oup.com/auk/article/131/3/351/5148974)  
[https://www.degruyter.com/view/journals/ami/5/1/article-p1.xml](https://www.degruyter.com/view/journals/ami/5/1/article-p1.xml)

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**Author:** ![mamestraconfigurata](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/mamestraconfigurata/32/10149_2.png) [@mamestraconfigurata](https://forum.inaturalist.org/u/mamestraconfigurata)\
**Post date:** [August 18, 2020, 2:33pm UTC](https://forum.inaturalist.org/t/swallow-numbers/15546/3 "2020-08-18T14:33:42Z")

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Thank you very much! I’ll pass all this on.

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**Author:** ![mamestraconfigurata](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/mamestraconfigurata/32/10149_2.png) [@mamestraconfigurata](https://forum.inaturalist.org/u/mamestraconfigurata)\
**Post date:** [August 18, 2020, 5:12pm UTC](https://forum.inaturalist.org/t/swallow-numbers/15546/4 "2020-08-18T17:12:49Z")

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The person I’m referring to said these results were perfect (although in a larger sense disappointing). So again, thank you.

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/inaturalist/original/2X/7/7831452cf7f0d653ff1ffd34176334b7ef1b6a17.png) [@system](https://forum.inaturalist.org/u/system)\
**Post date:** [October 17, 2020, 5:12pm UTC](https://forum.inaturalist.org/t/swallow-numbers/15546/5 "2020-10-17T17:12:54Z")

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Closed on October 17, 2020, 5:12pm UTC

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