Nests in cool, moist conifer or mixed forests, bogs, swamps, peatlands, and muskegs. Often in landscapes that are flat or poorly drained (Gross and Lowther 2001). Habitat usually well stratified, with open canopy, saplings and seedlings, shrubs, and abundant thick moss cover (Gross and Lowther 2001). In the Yukon, commonly noted in boggy areas with stunted black spruce and occasionally white spruce with sparse deciduous shrub (Alexander et al. 2003).
Alexander, S. A., F. I. Doyle, C. D. Ecker, H. Grünberg, N. L. Hughes, M. Jensen, I. Johnson, D. H. Mossop, W. A. Nixon, and P. H. Sinclair. 2003. Birds of the Yukon Territory (P. H. Sinclair, W. A. Nixon, C. D. Eckert, and N. L. Hughes, eds.). UBC Press, Vancouver, B.C.
Gross, D. A. and P. E. Lowther. 2001. Yellow-bellied Flycatcher (Empidonax flaviventris). In The Birds of North America, No. 566 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.