This is Phil, an Anna's hummingbird that has taken up residence in the backyard of Casey's parent's house in Bellingham Washington. Anna's are the only species of hummingbird that overwinters in the Pacific Northwest, where temperatures can drop to near or below freezing. A feeder refilled every morning with a concentrated sugary brew fuels his daily activities. At night when temperatures begin to fall, Phil goes into a state of torpor, where his internal temperature also drops from 107 to around 48 degrees Fahrenheit.