ML619512798
vireo sp. Vireo sp.
Contributor
Date
Location
- Age
- Not specified
- Sex
- Not specified
- Playback
- Not specified
Observation details
Found by Lev Frid and Stephanie Pereira on May 23. Notes from Ezra: Singing enthusiastically for brief periods every 10-30 minutes, between the beginning of the boardwalk and the larger viewing platform at the end. Place where we had most luck here: 44.1775000, -79.5355556. Usually invisible but came low and close two times while we were there for decent looks. My comments on the visual ID are not going to be any more valuable than Lev’s and Stephanie’s original analysis, but what I *saw* was a muted “solitary vireo sp.” (white eye ring and throat)…singing a song which, to me, had the sonic quality and basic structure of a YTVI but was decidedly more variable. Spectrograms of YTVI reveal a flourish at the beginning and end of the main slur note, whereas this bird only had a flourish before the slur note, which is consistent with CAVI. Very curiously, while hearing what I presumed was the bird, I was scanning the canopy with my bins and came across a nest with a solitary vireo type sitting in it. I am certain it had a white eye ring and throat, as I was looking specifically for YTVI field marks. The didn’t want to take my bins off it because I knew it would be tough to refind as it was really high up and far back and largely obscured. When I eventually took my bins off it after taking note of its bearings, I did have trouble refinding it, but 10 minutes later when we relocated it there was a YTVI sitting on the nest. I’m half thinking there’s a chance the CAVI has paired with a YTVI, as crazy as it sounds. Vagrants have paired with local birds in the past (for example, the female VGSW in Thunder Bay in 2017), and this CAVI was acting somewhat like a breeding bird, singing frequently and sticking in the same shaded, high canopy area throughout the whole day. Neither I nor anyone else I talked to had BHVI in that location, but eBird checklists might reveal something different later. Certainly in range for breeding BHVI. Anyway, would love if someone could get a definitive ID on this bird. Specific instructions for how to local the nest are in the “simoce-chat” channel on the Ontario Bird Alert discord.
Technical information
- Recorder
- Microphone
- Accessories
- Original file size
- 1.03 MB