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Birdathon is a tool for recording your bird observations, organizing your bird checklists and sharing your birding stories with others. It is designed to be used in the field to efficiently record birds as you observe them. You can quickly record whether a bird is seen or heard and the number observed. The time and location of each observation is automatically recorded. You can add field notes to each observation. You can correct the location, time entries and the count of birds observed at any time to ensure your records are accurate.

Your checklists can be viewed in taxonomic order, alphabetically, by rarity or as a timeline of birds in the order observed. You can intersperse your checklist with notes and other observations such as mammals, butterflies, wildflowers, etc., to make it into a rich recording of your time in the field. You can organize your checklists into categories such as Day List, Year List, County List, Life List, Big Sit, etc., and assign color themes to your lists.

You can send an email report that includes your timeline, all notes you take in the field and a taxonomic list of birds observed. You can view a map of your sightings and include the map in your email report. You can export your checklist as a comma-separated-values (csv) text file for import into eBird.

A Summary view aggregates bird observations from all your checklists across different time spans (week, month, year, etc.) and geographic locations, sorting the information in various ways. You can export Summary data into a csv text file.

Bird species may be added and deleted from lists you create. You can create new checklist templates from your previous lists or import templates created by others. You can import a text file into Birdathon and it will automatically be made into a bird checklist template.

Birdathon utilizes the Clements Checklist of birds of the world for common names, family names and taxonomic order. Birdathon contains the latest checklists of the American Birding Association (ABA) and the American Ornithological Society (AOS) and the four-letter Alpha codes from the Institute for Bird Populations. Note: the AOS was formerly the American Ornithological Union (AOU).


AOS Checklist 59th (2018) derived from the American Ornithological Society's Check-list of North and Middle American Birds, updated through the 58th supplement (July 2018). Copyright ©2018 American Ornithological Society. Note: the AOS was formerly the American Ornithological Union (AOU). http://checklist.aou.org. Used with permission.

ABA Checklist v8.0.4 (August 2018) derived from the American Birding Association's checklist of North American Birds. Copyright ©2018 American Birding Association, Inc. http://listing.aba.org/aba-checklist/. Used with permission.

Santa Clara County 2018 Checklist derived from the Santa Clara Valley Audubon Society 2018 and earlier Santa Clara County, California Bird Lists, maintained by Brooke Miller. http://www.scvas.org/page.php?page_id=6811. Used with permission.

Bird family names and world birds come from the Clements 2018 Checklist, from the Cornell Lab of Ornithology’s eBird/Clements checklist of birds of the world: v2018, by Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/. Used with permission.

App Preview music "Carefree" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0

What's New

Version 1.2.2

Bug fix release. Addresses the following issues:
• The summary view was blank when sorting alphabetically (if sorting last name first)
• Fixed incorrect species count for ABA v8.0.4 checklist template
• When the species count is > 999, show commas for the count at the bottom of the checklist
• Fixed a crash when deleting the only non-bird observation in a checklist
• Modified sort order of notes when viewing a checklist by Family or Alphabetically

Ratings and Reviews

Mad Dog Davis ,

Best Bird Checklist Ever!

If you keep lists of birds and they are in books, journals, slips of paper, back of envelopes or anywhere else, this is the most incredible App to get them organized in one spot.

And of course when you go on your next trip; just use this App to record your sitings. It automatically records your time and location as well. A couple of letters in the search box will find your bird for you with amazing speed. Wonderful!

There is a spot to record other notes if you want to record, flowers, weather, mammals or other things seen on the day.

The App is free; but you can leave a tip if you find it useful and want to thank the author.

Don’t miss this App!


Barry Langdon-Lassagne
25.1 MB
Requires iOS 10.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017–2018 Barry Langdon-Lassagne
In-App Purchases
  1. Incredible Tip $4.99
  2. Amazing Tip $2.99


  • Family Sharing

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

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