Fig. 2From: The stoichiometric approach in determining total evaporative water loss and the relationship between evaporative and non-evaporative heat loss in two resting bird species: passerine and non-passerinePatterns of loss body mass. Body mass variations in 5 European greenfinches and 5 budgerigars after evening feed during the night, in summer. Each value is a mean for several measurements in 5 birds at given T A, vertical lines ± SD. The data show that all the birds became fasted for at least 3–4 h and were in post absorptive state during the measurements. It is evident that the birds lose their body mass with the equal rate during the measurementBack to article page