Potential Hoary Redpoll (Acanthis hornemanni) Lifer # 248. Hilda Road Feeders, Shirley's Bay, Ottawa, Ontario, Canada. March 3rd, 2019.
I have had this looked at by several experts; some lean towards Hoary while others lean towards Common. It has some Hoary features, but the definitive field marks are not captured in the photo. Therefore, this bird is technically "unidentified".