Species: Contopus cooperi

Courtship includes territorial fights between males, and males pursuing females across the canopies of coniferous forests. Courtship continues for at least two weeks until nest sites are chosen and pairing is completed (Bent 1942).<br><br>Reported egg dates include the following (see Wright 199, Altman 1999): late May to early July in California; late May through late July in northwestern Oregon; early June to mid-July in western Washington; late May through mid-July in British Columbia; mid-June through mid-July in Colorado; early June through early July in Massachusetts; mid-June through late July in Maine; early to late June in Ontario and New York; mid-June through early July in Nova Scotia. In central Alaska, first clutches were initiated from late May through mid-June.<br><br>Clutch size is usually 3-4. Incubation, by the female, lasts 14-19 days. Young leave the nest 15-23 days after hatching. Most fledging occurs in early to mid July, though young from renesting efforts may fledge late in July. In New York State records of unfledged juveniles on 22 June and fledglings from 10-24 July, and in Oregon most young fledged in 19-21 days (Altman 1999). In Alaska fledging recorded at 19-20 days after hatching of first egg for 2 nests (Wright 1997). Fledglings depend on parents for up to about a week after leaving the nest. <br><br>Renesting following loss of first clutch is common, second clutches may be smaller, three or even two eggs.