Merlins are small, fierce falcons that use surprise attacks to bring down small songbirds and shorebirds. They are powerful fliers, but you can tell them from larger falcons by their rapid wingbeats and overall dark tones. Medieval falconers called them “lady hawks,” and noblewomen used them to hunt Sky Larks. Merlin populations have largely recovered from twentieth-century declines, thanks to a ban on the pesticide DDT and their ability to adapt to life around towns and cities.