Other invasions are recorded by Mr. Forbush (1927) as follows: “A great irruption of these birds occurred in the autumn of 1860. During the following winter Mr. George O. Welch often saw as many as six or eight at once in a piece of fire-killed timber in Lynn. * * * In the autumn of 1925, there was a lesser movement, and many returned through New England in the spring of 1926. In the autumn of 1926 another considerable southward migration occurred.” DISTRIBUTION _Range._--North America south to the Central United States; nonmigratory. The range of the Arctic three-toed woodpecker extends =north= to central Alaska (probably Tocatna Forks and Fairbanks); southern Mackenzie (Fort Wrigley, Fort Providence, and Smith Portage); northern Manitoba (Cochrane River and probably York Factory); Quebec (Richmond Gulf, Godbout, and Madeline River); and Newfoundland (Nicholsville). =East= to Newfoundland (Nicholsville); probably rarely Prince Edward Island (Baddeck); eastern New Brunswick (Tabusintac); probably rarely Nova Scotia (Advocate); Maine (Machias); and probably rarely Massachusetts (Winchendon and Concord). =South= to probably rarely Massachusetts (Concord); central Vermont (Pico Peak); southern Ontario (Ottawa, Algonquin Park, and Sand Lake); northern Michigan (Au Sable Valley, Blaney, and Huron Mountain); probably northern Wisconsin (Kelley Brook and Star Lake); northern Minnesota (North Pacific Junction, Itasca Park, and White Earth); probably southwestern South Dakota (Elk Mountains); northwestern Wyoming (Yellowstone Park); northwestern Montana (Glacier National Park and Fortine); northern Idaho (Fort Sherman); and central California (Mona Lake and Bear Valley). =West= to California. (Bear Valley, Lassen Peak, and Mount Shasta); Oregon (Pinehurst and Fort Klamath); Washington (Bumping Lake and probably Tiger); British Columbia (Arrow Lakes, Fort St. James, Kispiox Valley, and Atlin); south-central Yukon (Six-mile River); and Alaska (Chitina Moraine and probably Tocatna Forks). During the winter season this species has been recorded =north= to Alaska (Copper River); Mackenzie (Fort Simpson, Fort Rae, and Fort Reliance); Manitoba (Grand Rapids); Ontario (Arnprior and Ottawa); New Brunswick (Scotch Lake); and Nova Scotia (Pictou). While no regular movements have been detected, individuals have been recorded at this season =south= to Long Island, N. Y. (East Hampton and Southampton); northern New Jersey (Upper Montclair and Englewood); southern New York (Ithaca); Ohio (Painesville and Akron); Illinois (Rantoul and Peoria); Iowa (Big Cedar River); and Nebraska (Omaha and Dakota). _Egg dates._--Labrador: 3 records, May 27 to June 2. Maine: 3 records, May 19 to June 12. New Brunswick: 12 records, May 19 to June 30; 6 records, May 30 to June 15, indicating the height of the season. New York: 5 records, May 18 to June 10. PICOÏDES TRIDACTYLUS BACATUS Bangs