Bird Counting 101 (2012)

You can also use software to count birds, https://blog.simos.info/how-to-count-the-population-of-flock...

(disclaimer: I wrote the tutorial from a post I found on the Internet. That source post is now gone)

As one of the original eBird developers I am happy to see all the progress it has made over the years. The Ornithology Lab at Cornell is doing some great work helping folks understand the roll birds play in our ecosystem.