50 
Bt'LLETIX 292. r. S. DEPAETMEXT OE AGKICULTCTBE. 
the Tres Marias (Bailev\ and at 
at Magdalena Bay (Bryant), on 
Maz a tl an (L a wr ene e ) . 
The species is present the whole year on the coast of Lower Cali- 
fornia and western Mexico from the United States boundary to 
Tepic. a distance of over a thousand miles, and it is not probable that 
all these nntold thousands of birds gather for nesting purposes on 
the few acres of the two islands where their eggs have been obtained. 
As soon as the young birds are strong of wing both old and young 
begin to work their wav northward. On the southern coast of Cali- 
Fig. 24.— Heennami's gull {Laru-s Jieermanni). 
fornia, where only a few buds are present after the middle of March, 
the numbers begin to increase the last week in May and early in 
June (Willett). The first northward migrant reached Eureka, Cal., 
June 1, 1SS9 (Palmer), and William Head, Vancouver Island, British 
•Columbia, June 28, 1904 (Kermode). The species is an abundant 
summer migrant along the whole coast and has been taken north to 
the northern end of Vancouver Island (Saunders). 
Its stay in this northern part of the range is not prolonged. In 
1894, by the end of July flocks were beginning to pass southward at 
Monterey Bay, Cal. (Loorois). Though common during July and 
August at the southern end of Vancouver Island (Kermode 1 , by 
