Western MT this morning 5/28/23. Noticed two large V's of CANG and I did a double-take on one group - noting a much smaller bird in the formation as they got directly overhead. Snapped a couple quick photos. The bird appears much slighter/lighter than the CANGs but was flapping similarly to them, and not rapidly like a duck. I cropped the photo and lightened it a bit to reveal a dark(but not black) head, no chin patch, long narrow wings, and maybe a hint of yellow or orange on the bill.
Wayward Eurasian goose? Escaped domestic? Any ideas?