For example, a student may say B7. If she points to the wrong coordinate, she looses her turn. If she points to the coordinate she named, let her pick the piece of construction paper and turn it over. If she does so correctly, her team gets to keep that bird. If there is nothing on the back, the team still gets to keep the piece of construction paper.
Teams take turns until all pieces of construction paper are gone.
The team with the most birds wins. Optional - You may want to put pictures of predators, or things harmful to the birds of the wetlands on the back of some of the pieces of construction paper. If a team member picks that coordinate, they keep it. At the end, when the birds are counted, subtract the number of predators the team had from the number of birds. For example, a team may have 7 birds and 2 predators.