On the tenth of May, 1916, I heard in our orchard a new Warbler song. The notes were staccato with a singular low variation and with the aid of field glasses I identified four of these birds, the only ones I have ever seen. They were extremely active and apparently getting a good breakfast from the coddling worms in the appleblossoms. One came within ten feet of me and at intervals deferred pursuit of food to look me over. His trim appearance and vital little eyes, combined with quick decisive movements, epitomized the beauty and agility of the Warbler Clan.
They seem to prefer coniferous forests, especially in the northern part of their range but their rarity has left almost a blank for future observers to fill.
Eastern North America, west to upper Yukon Valley, southern Mackenzie and Ungava, central Keewatin and north to Anticosti Island. More common in migration in the Mississippi Valley.