This is a Scott Turnmeyer puzzle - box says 19" x 28" - 1000 piece puzzle created from a photograph of an adult female Bald Eagle taken near Front Royal, Virginia.
This puzzle is NOT for beginner puzzle folks; very difficult because of lots of duplicate pieces cuts and the commonality of the background and the eagle's chest. I noticed that Scott Turnmeyer changed the number of pieces to 500 and the size to 15" x 20" on his website: www.turnmeyer.com