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The Cornell Lab of Ornithology

Global Big Day

14 May, 2016

In our ongoing effort to push the boundaries of a Big Day, we're inviting everybody around the world to join together and participate in our Global Big Day to support global conservation.

How to Participate

Submit Your Data to eBird on May 14

It’s that simple. If you submit your birds to eBird they count. Learn how to take part. Don’t worry — you don’t need to be a bird expert, or to go out all day long. Even a half hour checklist from your backyard will help. Of course, you are welcome to spend the entire day in the field, but know that it is not required! Please enter your data as soon as you can, preferably by Tuesday, May 17.

Visit this Page for Live Updates and Detailed Stats

During the Big Day, this page will be updated. You’ll be able to follow Team Sapsucker in Colorado — but more importantly, you’ll be able to track how many species have been seen around the world and in any region of interest to you.

Organize With Your Friends for Greater Coverage

Now is the time to start discussions on local birding discussion lists to make a plan to find difficult species. Learn how to share Global Big Day with others. Who will “get” Lesser Prairie-Chicken? Resplendent Quetzal? Blue Pitta? Wallcreeper? Not all efforts need to work towards the global total. Try to organize in your home state, province, or even county to make sure teams spread out and find as many species as possible. Join our Facebook Event!

Join A Global Network of Birders and Conservationists

Global Big Day connects a network of people across the world to support a cause that transcends languages and cultures. From the southern tip of Africa to the soaring peaks of Himalayas, and from the Ecuadorian rainforest to backyards in New York – we are all a part of Team eBird, working to understand and conserve the birds we care about. Help mobilize birders in your area and see other efforts worldwide by country, state, and province.

Make Your Sightings Count

Don’t worry, every bird that you enter in eBird counts as a part of Global Big Day. However, there are three ways that you can make your sightings as valuable as possible. It is important to note that these are only suggestions—not requirements! 1. Submit complete checklists. 2. Keep counts of the birds that you see. 3. Keep multiple checklists throughout the course of your birding: if you get in the car you should end that checklist and start a new one when you get to the next location.


Please contact us if you have any questions.