Not sure where we picked this one up: Eurographics Puzzle: State Birds
Started with the edges, then the title postcard in the top left, then the “stamps” because those were easier to sort out, then the state names and flags, then the bird illustrations, then filling in the gaps.
It’s a great looking puzzle – I wish the text were more legible when complete – something about the glare makes it hard to actually read about the birds, but the illustrations (by David Allen Sibley of Sibley Guides)