Fletchper are one of the few bird Pokémon that don't migrate from frigid regions over winter. They prepare for the winter all year, building a warm nest full of moss, fur and feathers. They secrete a gel over the outside of it to keep it waterproof.
Fletchper usually live in water but come out onto land seeking food occasionally. These friendly Pokémon send signals to one another with beautiful chirps and tail-feather movements.