Summer Picnic Reverse Pellet Lab

This activity turns owl pellets into a playful summer food-web mystery. The twist? Students are not just asking, “What did the barn owl eat?” They are also building the “Nope, Not Dinner” side of the menu.

• Paper plates or trays

• Gloves and handwashing supplies

• Summer “picnic cards” with foods and animals

Make the picnic cards

• Likely prey: vole, mouse, shrew, small rat.

• Possible but less common: small bird, large insect.

• Usually not: watermelon, corn, sunflower seeds, berries, chips, hot dog, frog-shaped candy, rabbit, fish, pet food.

• Students open one pellet and sort bones carefully.

• They identify prey clues using skulls, jaws, or teeth.

• They record only what the pellet actually supports.

• Barn Owl Ate This: items supported by pellet evidence.

• Barn Owl Would Usually Not Eat This: items that do not fit barn owl hunting or digestion.

• Need More Evidence: items that might be possible, but not proven.

Give each group five silly picnic cards and ask them to defend every placement. They must use this sentence frame:

“We placed ___ in the ___ category because the evidence shows ___.”

Then let groups trade cards and challenge each other. Is a berry in the pellet? No. Could a mouse eat berries? Maybe. Could the barn owl eat the mouse? Yes.

Suddenly, students are not just sorting foods. They are building a food web chain.