: Singing males that show up occasionally late Jun-late Jul for a few days to a week and then disappear are thought to be birds dispersing from distant breeding areas.
: mid May-mid Jun in tall deciduous trees where most would pass undetected were it not for their loud, stuttering song. Listen here. mid Aug-late Sep with peak mid/late Aug and to early Nov, in deciduous woods and where migrants concentrate.
Miscellany: Tennessee Warbler is a spruce budworm specialist and its numbers fluctuate depending on the scope of budworm outbreaks. Breeding numbers were known to increase 10-fold during the course of a major outbreak. Tennessees were a breeder here in the late 20th century when there were budworm outbreaks but with the absence of budworm outbreaks since then, nesting has not been confirmed.
Last Updated: May 24th, 2022