^°1908^^1 Dawson, Bird Colonies of the Olympiades. 157 



Gulls, sighted on Split Rock July 12, 1906, are believed to have 

 been migrants en route to Puget Sound (more strictly Washington 

 Sound, as the lower portion is called) via the Straits of Juan de 

 Fuca. 



As early as the 7th of July shore birds were returning, and we 

 noted the following species in that month : 



Pectoral Sandpiper (Actodromas maculata), July 7. 



Western Sandpiper {Ereunetes occidentalis) , July 7 fT. 



Knot {Tringa canutus), July 7. 



Black Turnstone {Arenaria melanocephala) , July 12 ff. 



Wandering Tatler (Heteractitis incanus), July 13 and 16. 



Seniipalmated Plover {.Egialitis semipalmata) , July 16 and 17. 



Yellowlegs (TotarMs flavipes), July 16. 



Hudsonian Curlew {Numenius hudsonicus) , July 16 and 25. 



Ruddy Turnstone (Arenaria morinella), July 17. 



Northern Phalarope (?) (Phalaropus lobatus), July 25. 



It is not expected that the Censuses following will prove anything 

 less than tedious to the casual reader; but it is believed that a con- 

 cise record of the present bird population of the Olympiades will 

 prove of value in the future in attempting to measure the effect of 

 changed conditions. Inasmuch as some of the islands are here 

 named for the first time, it has seemed wise to add a brief physical 

 description of each, as well as to give its approximate location as 

 determined by measurement of Coast and Geodetic Survey Chart 

 No. 6400. Heights of islands are oftener guessed than otherwise, 

 inasmuch as the Coast and Geodetic Survey chart figures are 

 sometimes grossly inaccurate; e. g., "Perkins Reef (110)" — it is 

 not reallv more than 25 feet above tide; "Carroll Islet (126)" 

 where (220) is evidently intended, etc. 



"R" signifies breeding resident; and "V" visitor, whether 

 migrant or from the mainland. Only adult birds are counted. 



Erin. 



Loc— Lat. 47° 18' N.; Long. 124° 16'; S. E. from Point Grenville; 

 offshore 200 yds. 



Area. — About 1^ acres. 



Desc. — A rock, 125 feet high. Perpendicular half-walls except on north 

 side, where chmbable. Shaped like a curb roof on top, sloping W., N., 

 and E. Earth-capped, with dense wire-grass. 



