Science & Nature: Group Nouns: A Group Of Unicorns Is Called A __________. A Group Of Kangaroos Is Called A Mob. A Group Of Whales Is Called A Pod. A Group Of Geese Is Called A Gaggle. A Group Of Owls Is Called A Parliament. A Group Of Ravens Is An Unkindness. A Group Of Crows Is A Murder. A Group Of Bears Is Called A Sleuth. Twelve Or More Cows Is Called A Flink