900 ZOOLOGY

Eggshell Consumption by Birds

By: Lara T.Year: 2020School: Serrano Intermediate, 7th gradeDivision: JuniorAdvisor: Holly Danielson How does the amount of eggshell and birdseed consumed by the various birds in my backyard fluctuate in the four seasons throughout the year? I hypothesized that the highest amount of eggshells would be eaten in the spring, much less in the summer, and