eBird is a flagship community science effort that has not only redefined the recreational birding world, but has become a powerful tool for biologists looking to understand the relationship between birds and their environment. This talk will explore the plethora of applications for eBird’s standard data unit: the checklist. From enhancing models of changing distributions and mapping migratory flyways to scaling up behavioral studies on cooperative breeding and informing landscape management, there is no shortage of ways for biologists to tap into this unique, 21st century resource. Come learn what happens to your observations after you click ’submit’!