How costly is flying and gathering food?

Backed by Jeff Pentel, Wayne Sentman, Jill Marketos Milburn, Laura Wagner, Mark Kroeger, David Thompson, Sadie Birdfeather, Jen Jelincic, Amy Lush, Paul Richard Wagner, and 23 other backersNone, Scott Shaffer, Elizabeth Flint, Anita Phagan, Cassie Marketos, Anne Cassell, Dan Saltman, Sandra Machado, Herma Van Gerner, A Schmidt, Renee Murphy Shaffer, Heather Day, Corey Allyn, Emily Nichols, Susy Alarcon Arriaga, Cleo Small, Devon Devonian, Mary Moskal, Wynter Skye Standish, Rachael Orben, Hannah Madden, Oscar Jasklowski, and Cindy Wu