This morning (April 24), Pat Hare photographed a Phylloscopus warbler in Mississauga in the area of Hwy 403 and Mississauga Rd. It looks good for Yellow-browed Warbler but I'm FAR from an expert on this difficult group.
Hopefully someone will post more information if more details become available. Mike Burrell -- Ontbirds and Birdnews are moderated email Listservs provided by the Ontario Field Ornithologists (OFO) as a service to all birders in Ontario. Ontbirds is reserved for sightings of provincially rare birds. To post a message on Ontbirds, send an email to: birdalert@ontbirds.ca. If you have any questions or concerns, contact the Ontbirds Moderators by email at birdal...@ofo.ca. Please review posting rules and guidelines at http://ofo.ca/site/content/listserv-guidelines During the COVID-19 pandemic, all Ontario birders should be taking extra precautions and following local, provincial, and federal regulations regarding physical distancing and non-essential travel. To find out more about OFO, please visit our website at ofo.ca or Facebook page at https://www.facebook.com/OntarioFieldOrnithologists.