Red-rumped Swallow Cecropis daurica
Estimated average number of individuals by week based on eBird data, Jul 2012 to Jun 2022
Peak week Oct 08-Oct 14
Early date 01 Oct 2005
Late date 10 May 2020
A swallow most often observed during the raptor migration period in Oct. A second disjunct peak in Jan is presumably associated more with wintering birds.