Yes, very often over the years, including here north of Edmonds. And when spending time in the summer camped at the beach on Vashon Island, the little dickens would make so much constant yacking throughout the night it made me want to throw something at them (not that that would have helped). I consider them very nocturnal!
Dee Warnock
Edmonds
beachdee at usa.com

> Message: 13
> Date: Fri, 4 Nov 2011 20:04:48 -0700
> From: Joe Meredith <joemmoby at u.washington.edu>
> Subject: [Tweeters] Killdeer Behavior at Night
> Howdy Tweets,
> Last night while walking through the Montlake Fill (6:30-7:00pm) I noticed
> a pair of Killdeer flying and vocalizing. I'm fairly sure that I've heard
> the same calls from above my house (near the Green Lake Reservoir) at
> night. Is this type of nocturnal activity normal for Killdeer? Has anyone
> else made similar observations?
> ~Joe Meredith
> Seattle