Which US state has recorded only a single historic winter sighting of the Vermilion Flycatcher?

Answer

Montana

Montana is located well outside the primary range of the species, which is centered in the arid Southwest and parts of Latin America. The single historic winter record in this northern state underscores the localized nature of the bird and how rare it is for them to wander that far from warmer climates.

Which US state has recorded only a single historic winter sighting of the Vermilion Flycatcher?
locationbirdFlycatcher