Immature magnolia warbler
Rondeau Provincial Park, Ontario, Canada, Sept 7, 2020. Flitting around our small water feature. Only warbler of the day. Setophaga magnolia In 1810, Alexander Wilson collected a warbler from a magnolia tree in Mississippi, giving it the English name "Black-and-yellow Warbler" and "magnolia" for the scientific species name, which became the common name over time. source - https://www.allaboutbirds.org/guide/Magnolia_Warbler/overview