A nest with eggs of the Canada Warbler was found in northern Lower Michigan in a dry forest opening. This paper deals with information recorded from a blind at the nest during the period of incubation. Incubation was performed solely by the female, with attentive periods averaging 28 minutes, inattentive periods 7 minutes. Her behavior on and off the nest and her approach to the nest are described. The male came to the nest nine times and was in attendance three per cent of the time. His approach to the nest is described. Each time he arrived with food and offered it to the eggs as a kind of "anticipatory feeding." Throughout the period of incubation the male sang without let-up from approximately 75 to 300 feet from the nest.