Caprimulgiformes
- Avian thermoregulation in the heat: is evaporative cooling more economical in nocturnal birds?
Summary: Caprimulgids and Australian owlet-nightjars displayed allometrically lower water losses compared with diurnal birds, whereas owls exhibited water losses comparable to those of similarly sized diurnal birds.
- Avian thermoregulation in the heat: evaporative cooling capacity of arid-zone Caprimulgiformes from two continents
Summary: Caprimulgiformes demonstrate high heat tolerance that is mediated by low rates of resting metabolism and a very efficient evaporative process that uses a gular flutter mechanism.