Records

Records: 74. Burke Museum nest record cards=40 (class cards=13); egg sets=27; field notes=7.

Counties

Adams=4; Benton=2; Chelan=2; Douglas=3; Ferry=1; Grant=1; Island=3; King=7; Kittitas=2; Klickitat=1; Okanogan=4; Pacific=1; Pierce=15; San Juan=1; Snohomish=1; Spokane=6; Stevens=2; Whatcom=1; Whitman=6; Yakima=11.

First-egg dates

Earliest 16 April (Julian day 106); latest 14 June (Julian day 165).


The nesting season is earlier for lowlands (N=64, median date 10 May, Julian day 130) than for areas above 2,000’ (N=10, median date 1 June, Julian day 152).

Clutch size

31 usable records. Mean 7.1 eggs.

Season and clutch size

Clutch size did not change significantly with season.