Sir William Jardine's illustrations of the duck tribe..Dumfries, N.B. :Privately printed at the expense of the author,[1840?].biodiversitylibrary.org/page/36001902
If it's not another alligator, you come upon a family of Wood Ducks around every bend on the Silver.Aix sponsaWood DuckSilver RiverSilver Springs State ParkOcala, Marion County, Florida, USAOlympus OM-D E-M5 Mark IIOlympus M.75-300mm F4.8-6.7 II
A monograph on the anatidae, or duck tribe /.London :Longman, Orme, Brown, Green, & Longman ... and Eddowes, Shrewsbury,1838..biodiversitylibrary.org/page/36002203