If you're involved with Christmas or Breeding Bird Counts, the boundaries of your count circle are always of interest, and sometimes unclear. Count Circle includes the complete National Audubon database of CBCs, with a total of 2822 different count circles in 92 different states and territories including Canada, Mexico, the Caribbean, South America, and Antarctica (updated as of November 2017). Lookup and display any count circle on an interactive map, and find out exactly what is (and is not) included in the circle. The software also displays your current location, so you can determine precisely if you are inside or outside the count circle as you are doing your count.

You can also use Count Circle just to view the different circles, to help you decide which ones you might like to participate in. Display all the circles in your state with one click.

If you have reason to believe the database is in error, Count Circle lets you set the center of the circle, then update the database, and even, if you choose to do so, report the revision directly to National Audubon, who then review the update.

You can also create and save your own circles, and, combined with the ability to display multiple existing circles, this provides the perfect way to position a potential new circle so that it doesn't overlap existing circles. You can even choose the radius (in miles or kilometers) if you want to use something other than the "standard" 7.5 mile radius used for the CBC. A great addition for "patch challenges"!

Note: some reviewers have noted errors in the count circle locations. The data in the app is the latest data direct from the National Audubon Society. Any errors in location stem from that database, NOT from the app! This is precisely why the app includes a feature that lets you report such errors directly to Audubon, so that Audubon can correct such errors in future updates of their database.

Note: Notwithstanding the information in the previous paragraph, Count Circle is not affiliated with nor endorsed by the National Audubon Society. Christmas Bird Count is a trademark of the National Audubon Society.

What's New

Version 1.7.1

Updated for iPhoneX

Ratings and Reviews

Great for the 5MR Challenge!


If you’re doing the 5MR (five mile radius) local patch challenge, you need this app.

Easy as pie to set up your circle, and you’re off!

Very useful for CBCs


Very handy tool to both find a Christmas Bird Count (CBC) circle or for staying inside a circle while conducting a CBC. The developers are very responsive to changes to cout circle locations. I am a CBC compiler and when I entered a correction for the count center that National Audubon Society (NAS) had wrong for sometime (yes, the circle locatons are from NAS, so any location errors belong to NAS), they incorporated the change in the latest version. I hope NAS gets the coordinates correct as well since the correction I submitted went directly to them.

Wish list: Having the ability to see all of the count circles in a given area would be usefull for planning trips as well as gleaning locations where one could go to the NAS dabase for more information. Providing a direct link from a count circle to the NAS database to see historic bird data would also be very handy.

Great for rural road edges


If you do a rural route, this app is especially useful for knowing when you reach the edge of the circle on a rural road with no distinctive landmarks.

The app uses the National Audubon Society count circle database, and makes it very obvious how many errors the NAS has in its database. If nothing else, it should prompt NAS to clean up its circle locations. The good news is that you can manually move the circle center on the app to the real location. You can't change the NAS database, but for the purposes of doing your particular circle, you can set it up to use the correct location on your iPad or iPhone.


Stevens Creek Software LLC
5.3 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2012-2018 Stevens Creek Software


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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