There are 3 puzzles using the same clues but different arrangements. The teacher can use them in multiple days or different sections on the same day, or all in the same class to prevent cheating. There is an Identification Chart for the students to use to help find answers. The puzzles use 38 of the 40 birds. This one uses a selection of more difficult birds than Bird-o 1.
There are many nature study and science games in my TPT -- Word Search, Crosswords, Anagrams, Bingo, Rummy,Concentration,Sorting, tTic Tac Know, dominoes and Board games