Oct 27, 2018 YTHER/2018_10_27  Apr 20, 2019 Springbrook Prairie, IL   YTHER/2019_04_27 Apr 27, 2019
(Lesser Scaup) male
Lesser Scaup
male
Aythya affinis
inaturalist ebird		 (Lesser Scaup) pair
Lesser Scaup
pair
Aythya affinis
inaturalist ebird		 (Tree Swallow) singing
Tree Swallow
singing
Tachycineta bicolor
inaturalist ebird facebook 維基百科

Peter 2.0 root Root inaturalist ebird 3 photos this page.
 CC BY 4.0 photographer: Peter Chen 2.0