Daily Postcard: A calliope hummingbird perches on a person’s hand to sip water at a residence Monday in Cochiti Mesa. The calliope hummingbird is the smallest bird in the United States. It weighs about one-third as much as the smallest North American warblers and about the same as a ping pong ball. This tiny hummingbird is the smallest long-distance migrant in the world. Source: www.allaboutbirds.org. Photo by Marcela Walker