PUGET SOUND WHITE-CROWNED SPARROW 1351 



* * * Up to the day of departure, the behavior of the wintering flocks suffers 

 no radical change except for the increased frequency of song, beginning some four 

 weeks before migration. 



* * * Neither chasing nor fighting, other than occasional momentary disputes 

 over food, occurs on the wintering grounds. There is no stimulation of trilline; 

 and posturing in the female. Neither territorial jealousy nor sexual excitement 

 have yet come to the surface. The coherence of the flock is maintained up to the 

 moment of departure. 



Distribution 



Range. — Southwestern British Columbia to extreme southwestern 

 California. 



Breeding Range. — The Puget Sound White-crowned sparrow breeds 

 from the east coast of Vancouver Island (Quinsam River) and from 

 the southwest mainland of British Columbia (Vancouver, Mission 

 City) south, west of the Cascade Range through Washington (Nook- 

 sack Valley, North Bend, Chehalis, Cathlamet) and Oregon (Logan, 

 50 miles inland along the North Santiam River, Corvallis) southwest 

 into extreme northwestern California (Smith River, east of Eureka) 

 south to Weott and west to Cape Mendocino. 



Winter range. — Winters from southwestern British Columbia (cas- 

 ually to Comox and Victoria) ; but more commonly from Oregon 

 (southern Willamette Valley; Coquille) west to the coast; east to 

 Dudley, Mariposa County; south to southwestern California (San 

 Nicolas Island; La Jolla). 



Casual records. — Casual in winter in Oregon (Crater Lake National 

 Park — east entrance), Washington (Puyallup Valley in Pierce County) 

 and California (Dudley, Mariposa County). 



Migration. — Early dates of spring arrival are: Oregon — Tillamook, 

 March 18. Washington — Seattle area, March 24; Friday Harbor, 

 April 4; Bellingham, March 26. British Columbia — Colwood, Van- 

 couver Island, last week of March; Vancouver, April 2. 



Late dates of spring departure are: California — Sebastopol, May 1; 

 Berkeley, April 21. 



Early dates of fall arrival are: California — Sebastopol, September 

 3; Woodacre, September 21; San Nicolas Island, September 24. 



Late dates of fall departure are: British Columbia — Alta Lake 

 region, September 17; Colwood, Vancouver Island, first week of 

 October; Vancouver, October 15. Washington — Friday Harbor, Sep- 

 tember 21 (2 years record); Seattle area, October 3. Oregon — 

 northwestern Oregon, October 1; Netarts, September 10. 



Egg dates. — British Columbia: 6 records, May 4-June 26. 



California: 31 records, April 23 — July 23; 9 records, April 28-May 

 8; 12 records, May 11-May 31; 8 records, June 6-June 26. 



Oregon: 5 records, May 5-June 6. 



