Global Big Day is an annual celebration of the birds around you. No matter where you are, join us virtually on 11 May, help celebrate World Migratory Bird Day, and share the birds you find with eBird.

Participating is easy—you can even be part of Global Big Day from home. If you can spare 5 or 10 minutes, report your bird observations to eBird online or with our free eBird Mobile app. If you have more time, submit several checklists of birds throughout the day. You never know what you might spot. Your observations help us better understand global bird populations through products like these animated abundance maps brought to you by eBird Science.

Last year, Global Big Day collected more data about birds on a single day than ever before. More than 58,000 people gathered 3.2 million bird observations on 148,000 checklists, setting new world records for a single…