_Casual records._--The Baird sandpiper has several times been taken or observed in various parts of Mexico so that it seems reasonable to believe that at least a part of the birds migrate over that country. In other Central American countries and in the West Indies it is rare. Among the records are: Costa Rica (Cerro de la Candelaria, October 1900, Volcano Irazu, June 8, 1894, La Estrella de Cartago, November 5, 1907, and San Jose, September 18); and Cuba (Cocos Island). It also has been detected on the Galapagos Islands (Barrington Island, October 6, 1897); Lesser Antilles (Dominica, October 1, 1904); Virginia (Four-mile Run, September 3 and 25, 1894); New Jersey (Stone Harbor, September 5, 1898); Quebec (Montreal, September 17, 1892); New Brunswick (St. Andrews, September 10, 1901); and England (Rye Harbor, Sussex, November 11, 1900). _Egg dates._--Alaska: 27 records, June 9 to August 24; 14 records, June 19 to July 2. Arctic Canada: 20 records, June 10 to July 21; 10 records, June 19 to 26. PISOBIA MINUTILLA (Vieillot) LEAST SANDPIPER HABITS _Contributed by Charles Wendell Townsend_ This least of all our sandpipers is so little smaller than the semipalmated sandpiper and differs so slightly from it in other ways that the two are generally confused in life. Their small size, and their notes have given them the familiar name of "peep," but near New York they are also called "oxeye." Who has not been gladdened by the sight of flocks of these gentle little birds scampering along the beach or diligently feeding in the tidal flats and in the salt marshes! _Spring._--The duration of the spring migration is much more brief than that of the autumnal one. The birds are hastening to their breeding grounds and the least sandpiper is only a month in passing through. In New England this is from about May 5 to June 7. At this time the birds are more apt to be found on the beaches than in the fall, although they are found in greatest abundance in the marshes. _Courtship._--The most noticeable part of the courtship of the least sandpiper is the song. I have observed it on the breeding grounds in Nova Scotia and in Labrador, as well as during the spring migration in New England. The bird springs up into the air on quivering, down-curved wings and circles about, now lower, now higher, reaching at times a height of 50 or more yards. In the air it emits a short sweet trill which is rapidly repeated, and with each song burst the wings are rapidly vibrated. On one occasion in Labrador the bird remained in the air circling and repeatedly trilling for five minutes by the watch, and continued to trill after it had reached the ground. Immediately it was up again, trilling, and, as I left the bog, it followed me, still trilling.