from a qouted website
Since 1934, more than 135 million Federal Duck Stamps have been purchased. These purchases have generated almost $1 billion for the Migratory Bird Conservation Fund, and have been used to purchase close to 6 million acres of habitat.
I am buying my new one as starting in July 1st, it gives "free" admission to any National Wildlife Refuge that collects a fee.
This year's art depiction is of Canada Geese ( ironically)
https://store.usps.com/store/browse/subcategory.jsp?categoryId=duck-stamps
https://www.fws.gov/birds/get-involved/duck-stamp.php
