An immature western bluebird takes flight from a small tree while hunting insects in a field along the Umpqua River near Elkton in southwestern Oregon on August 1, 2022. According to allaboutbirds.com, a western bluebird weighs about an ounce. It needs about 15 calories (technically, kilocalories) per day, or 23 calories if raising young. (Photo by Robin Loznak/ZUMA Press Wire/Rex Features/Shutterstock)
