What is it?
abundanceR provides a simple way to compare bird abundance for point counts using time of removal methods and data from the USGS Bird Point Count Database. The program summarizes a bird data set and reports species detections and estimates of density, corrected for detection probability, for data collected using time removal methods. Measures of community composition are also reported. AbundanceR can also be used to format data for input into program MARK if more advanced analyses are desired.

A detailed 1 hour webinar on the program is available in the download area.

You can also read the online help files

Where can I download it?
download icon   The latest version of abundanceR can be downloaded here.

What kind of data do I need?
At this time, abundanceR can only analyze time removal data collected using either 5 or 10 time intervals per survey. For example, a 10 min count broken into 1 min intervals. The program does not work for data with fewer unequal time intervals (e.g., first 3, middle 2, and last 5 minutes).

How does it work?
Here's a brief overview of how it works with screenshots from the actual program (The program is only available as a desktop application):

After loading the export file of your data from the USGS Bird Point Count Database, you can select the species and point groupings you would like to analyze

When you click analyze, the program runs four different models in program MARK (including species and group-specific detectability) and returns model-averaged estimates of abundance and community composition

You can also export detailed results to Excel and if you have an internet connection, the programs will generate simple graphs

Who is using abundanceR right now?
The program is now in active use by Refuge staff in the Midwest and Northeast, the Central Hardwoods Joint Venture, and the Kentucky Department of Fish and Wildlife Resources.

Can I use abundanceR with a different database?
If you manage a large database or data center and would like information on how your data could be exported for use in abundanceR please click here. 

Who provided funding for the project?
This project was made possible by the U.S. Fish and Wildlife Service and the Eastern Coordinated Bird Monitoring Partnership.

Is there more documentation on the project available online?
More detailed information on the program is available in the Online Help Files.