1 Zlotnik Peregrine Falcon

The zlotnik is a pre-metric Ukrainian unit of weight historically equivalent to roughly 4.26 grams, revived here as a denomination name rather than a functional monetary measure — Ukraine has issued this brass wildlife series largely as collectible circulation pieces celebrating endangered and protected species under domestic conservation law. The Peregrine Falcon (*Falco peregrinus*) was once functionally extinct as a breeding bird across much of continental Europe following the widespread agricultural use of DDT after World War II, with populations only recovering after the pesticide's prohibition in the 1970s and 1980s.