Material Detail

Clip Birds

Clip Birds

The classic bird beak activity usually involves having students attempt to pick up various objects with a wide variety of “beaks,” including scissors, spoons, etc. This traditional approach demonstrates competition in an ecological sense, but does not clearly demonstrate variation within a population, which is central to evolution. In the Clipbirds activity the “beaks” are all the same, except for size. The proportion of big-, medium-, and small-beaked birds changes in response to the available types of food.


  • User Rating
  • Comments
  • Learning Exercises
  • Bookmark Collections
  • Course ePortfolios
  • Accessibility Info

More about this material


Log in to participate in the discussions or sign up if you are not already a MERLOT member.