NestWatch by the Cornell Lab 4+

Cornell University

Designed for iPad

    • 3.8 • 11 Ratings
    • Free



NestWatch is the Cornell Lab of Ornithology’s citizen-science project that tracks nesting birds in North America. Found a bird’s nest? You can report it for science.
Sign in to:

•Add a nest location using the interactive map.
•Add data on species, number of eggs, number of young, hatch date, and other pertinent details.
•Contribute to North America’s largest database on avian nesting success.

•Full offline functionality, enabling use in places with limited or no Internet connection or cellular service.
•Enter bird nest observations from anywhere in North America.
•Track your nesting statistics in real time.
•Ideal for managing nest box trail data.
•Automatically syncs with web version for seamless multi-user and multi-platform support.
•Your data are openly available for scientific research, education, and conservation right away.

Learn more about monitoring birds’ nests for science at

What’s New

Version 3.2.5

We are happy to announce the addition of the Spanish language translation to the NestWatch app!

Numerous bugfixes and localization efforts are included as well.

Enjoy the NestWatch season!

Ratings and Reviews

3.8 out of 5
11 Ratings

11 Ratings

Now This! ,

June 2021 update

Location services must be enabled for the app to work. Otherwise, the app gets stuck while "getting your nest in order, step 3 of 7."

Al 123457789 ,

New Version is much better (updated: May 2022)

The new version in May 2021 is a major improvement and has allowed me to use the App again! I have a large collection of nest boxes and earlier this year the old app became unusable. This upgrade came just in time to let me keep working in the field! The photo management is much smoother, the map, filtering, and summary pages are quick and I have yet to crash! Thank You!
*update May 2022
This app is still really useful but after using it for a year with multiple users sharing a log- in to all have access to the same 400+ nests it needs a button to force it to refresh or update “all data”. It regularly does not show me new nest checks that others have made until I open the nest and “pull down “ - then it will find the new check. This has caused problems many times including checking nests more often than needed!

hate noise ,

I’m about ready to give up

I’ve enjoyed entering data in Nestwatch for several years, but this year the app has become basically unusable for me. If I try to make more than one entry on a single day, I can usually make the first entry ok, but after that the Submit button doesn’t work. This happens whether I’m trying to enter data for more than one location on a single day, or for more than one date for a single location.

I have been in contact with customer support, but they haven’t been able to help me. I’ve lost track of how many times I’ve deleted and reinstalled the app. I’ve updated my iPad, rebooted my iPad, and tried going thru the website to enter my data instead of using the app. Nothing works. I’m watching two active nest boxes right now. Today I visited both but can’t enter both observations today, so I’ll try to remember to enter the second visit tomorrow. This is seriously getting to be more trouble than it’s worth.

Developer Response ,

Thanks for your feedback, we're sorry to hear you're having issues with the latest version of the app. Please contact us at for help troubleshooting your issue.

App Privacy

The developer, Cornell University, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • User Content
  • Identifiers
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Contact Info
  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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