Loggerhead sea turtle °C (55 and 59 °F). The loggerhead takes on a floating, cold-stunned posture when temperatures drop to around 10 °C. However, younger loggerheads are more resistant to cold and do not become stunned until temperatures drop below 9 °C. The loggerheads' migration helps to prevent instances of cold-stunning. Higher water temperatures cause an increase in metabolism and heart rate. A loggerhead's body temperature increases in warmer waters more quickly than it decreases in colder water; their critical thermal maximum is currently unknown. In February 2015, a live loggerhead turtle was found floating in British Columbian waters of 10.5 °C with
Loggerhead kingbird Loggerhead kingbird The loggerhead kingbird ("Tyrannus caudifasciatus") is a species of bird in the family Tyrannidae. It is found in the Bahamas, Cayman Islands, Cuba, the Dominican Republic, Haiti, Jamaica, Puerto Rico, and, very rarely, in the United States. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. This large kingbird measures long. It is dark grey above and white below. The head is black while the throat and cheeks are white. Like many kingbird species, the loggerhead possesses an orange or yellow crown patch, but it is well concealed and rarely