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Globally, Birken (Birken , Биркен ) is a very rare mostly masculine, but seldom female first name. The forename Birken is characteristic of Central Asia, particularly Kazakhstan, where it is a rare primarily boy's, but very seldom girly name. More frequently, Birken is the last name as well as the forename.
Mr, Ralf, Dave, Dirk, Dyan, Gary, Gaby, Lars, Leon, Lena, Lisa, Jane, John, Joel, Timo, Nina, Edie, Eric, Hans, Fred, Molly, Mitch, Paul, Kyle, Karl, Axel, Ms, Mel, Ben, Bob, Dan, Leo, Les, Jim, Ted, Tim, Myrna, Ene, Mary, Matt, Maya, Mike, Sven, Andy, Anna, Arne, Aron, Adam, Fae, and Sarah