If hummingbirds captivate you — and who isn’t mesmerized by the colorful, hovering, buzzing little critters? — the National Audubon Society would like to recruit you.

Using Audubon’s Hummingbirds at Home app (available on IOS and Android), birders and nature lovers will be able to help track and get a clearer picture of the U.S. hummingbird population. Smartphone technology — GPS, camera, Internet capabilities — lets anyone become a citizen-scientist.

Participants can monitor a patch of territory — their garden and/or yard, a park, whatever — and record hummingbird sightings as well as the bird’s food sources. Or they can report any random sightings. Participation can be as frequent or as limited as a person wants. The data will then be available to researchers and others in the volunteer network.

It’s free to participate in the program, which makes for a worthy family or school project. For more information or to get started, go to hummingbirdsathome.org.