... physiological stress indicators, which can be measured non-invasively using infrared thermal imaging, overcoming many limitations of current methods. Nonetheless, which aspects of stress physiology they represent remains unclear, as the underlying mechanisms are unknown. To date, validations have primarily...

... measurements, few of which have investigated behaviors, and none have investigated changes in peripheral heat exchange. We captured chipping sparrows in the winter and summer of 2022 in Wilmington, North Carolina, USA, and we collected thermal images of these birds at 15.0, 27.5 and 40.0°C. We found that heat...

...Juan D. Zuluaga; Raymond M. Danner ABSTRACT We used thermal imaging to show that two environmental factors – acute stress and diet – influence thermoregulatory performance of a known thermal window, the avian bill. The bill plays important roles in thermoregulation and water balance. Given...

... operate as an extension of the visual system. Because similar mechanisms underlie thermal imaging technology, imagery from thermal cameras is often used to infer how pit vipers perceive their environment. However, pit organs lack a focusing mechanism, and biophysical models predict that pit organs should...

... multiflash photography ( Jones and Rayner, 1988 ; Jones, 1995 ; Polak et al., 2011 ; Giuggioli et al., 2015 ). Thermal imaging methods allow the visualisation of animals in dark environments potentially over larger scales ( Hristov et al., 2008 ) and avoiding potential disturbances that may be caused...

... food restricted both wild and captive great tits ( Parus major ) during winter months and measured surface temperatures of the bill and eye region using thermal imaging, to investigate whether birds show rapid local heterothermic responses, which may reduce their thermoregulatory costs when facing...

... that they use their large bills to dissipate excess metabolic heat after flying. Alcidae Allen's rule Energetics Thermal imaging Endothermic animals regulate body temperature closely to maintain thermal equilibrium even in the face of highly demanding activities. Limits to heat dissipation may...

... production in individual blue tit nestlings differs between broods of different sizes. Cyanistes caeruleus Homeothermy Thermoregulatory capacity Thermal imaging Thermoregulation Birds are endothermic homeotherms and so depend mainly on endogenously produced heat to keep a constant...

... ecology of the snake. viper sensory behavioral ecology thermal imaging © 2012. 2012 19 9 2011 29 2 2012 * Author for correspondence ( [email protected] ) ...

... of flight in a wind tunnel by four European starlings Sturnus vulgaris made using three independent techniques: heat transfer modelling, doubly labelled water (DLW)and mask respirometry. We based our heat transfer model on thermal images of the surface temperature of the birds and air flow past the body...