Cardiovascular variables and blood gas data for bar-headed geese at rest and during exercise in normoxia and severe hypoxia (7% O2).

It was not possible to measure all variables in a single experiment, thus and were measured simultaneously, in a second experiment and and blood gas variables in a third experiment. Data are mean ± standard error (n); Mass specific values shown for study individuals (mean 2.33 kg, range 2.15 to 2.50 kg); O2 content shown as mL O2 per dL of blood, haematocrit as percent of packed cells;*mean different from value at rest,**mean different from normoxic value.