726 THE WESTERN GULL. 
wings (1. glaucescens), and that they occupy main the southern members of 
the Olympiades during the nesting season. 
Willoughby Rock, off Cape Elizabeth, is the northernmost colony of 
unnuxed occidentalis on the Washington Coast; but scattered pairs occur, 
along with Glaucous-wings, as far up as Carroll Islet. Upon Carroll, and 
also upon Wishaloolth, a constant percentage of Westerns may be found 
among the large numbers of Glaucous-wings, with whom they appear to 
intergrade, or hybridize. Certain it is, at least, that from a vantage point of 
observation, as upon the comb of Wishaloolth, 175 feet above tide, one may 
see unmistakable Westerns, with black wing-tips, passing and repassing 
below. Between such clear-cut examples and Glaucous-wings, every grada- 
Taken of Port Williams Photo by the Author 
RIDING AT ANCHOR 
tion appears to exist, altho typical glaucescens outnumbers all others ten 
to one. 
Nesting is undertaken in May, and by the 20th of that month, or by June 
10th at the latest, the complement of three eggs is laid. Nests are composed 
almost exclusively of dried grasses plucked by the birds, roots and all; and 
these become quite substantial structures if the grass is convenient. Ledges, 
crannies, grassy hillsides, and the exposed summits of the rocks, are alike 
utilized for nesting sites; while occasionally a bird ventures down so close to 
the tide line as to lose her eggs in time of storm. Chicks are brought off by 
the third week in June, or by the first of July, according to season, if 
unmolested. If the first set is removed, however, the birds will prepare a 
second, consisting almost invariably of two eggs, and these are deposited 
as likely a 
s not in the same nest as the former set. Deposition occurs at 
intervals of two or three days 
