92 



PACIFIC COAST AVIFAUNA 



No. 14 



Nests of this bird have been found very frequently and there is a large 

 amonnt of data on the subject. These data go to sho'.v that there are normally 

 two broods in a season, the first beginning in April or "arly ^lay, and the second 

 in June. The earliest nest of wliicli I have record is one containing three eggs, 

 April 16, 1915 (UuBois. MS). The latest date for eggsi of what is evidently the 

 first brood, is .Alay 20, 1900, at Lewistown (Silloway, 1903a, p. 41). The eai-liest 

 date for young on the wing is May 5, 1916, at Button (Dul^ois, MS). Second 



Fig. 20. Male Desert Hokm:i) Lahk; Di'ttox. 

 PiioK) i!V A. D. DuBois. 



bi-ood nests may be found with eggs in June and -July. 'i'iic eai'liest (hitf for 

 eggs is June 19, 1862 (Cooper, lS69b, i). 295), and the hitcst, July 18. 1874 

 (Cones, 1874b, p. 557). xV second laying at Dutlon had the last egg of tiiree 

 deposited July 8, 1916. The eggs hatched July 17 and 18, and the young left 

 the nest July 28 (UuBois, MS). This gives a period of about twenty days from 

 the laying of the last egg to the hatching of the young. It would scimh, figuring 

 at this rate, that there would be time for a brood to be reared hclwren the middle 



