One of my favorite pastimes is birdwatching. I've tried to include the kids from time to time, depending on how busy they are with extracurricular activities. One of my favorite bird websites is eBird, which I still use to keep track of our backyard sightings. We have also made bar graphs of the number per species. I'm pretty sure all of my kids can identify most of the birds that visit our feeders, as well as a few species of birds of prey. And we get lots of squirrels. I don't mind. They keep us entertained.