Venous Blood Gas and Lactate Values of Mourning Doves (Zenaida macroura), Boat-Tailed Grackles (Quiscalus major), and House Sparrows (Passer domesticus) After Capture by Mist Net, Banding, and Venipuncture

Blood gas partial pressures, pH, and bicarbonate and lactate concentrations were measured from the basilic vein of mourning doves (Zenaida macroura) and the jugular vein of boat-tailed grackles (Quiscalus major) and house sparrows (Passer domesticus) to assess immediate impacts of mist net capture and handling for banding and venipuncture. Mourning doves and house sparrows exhibited mild acidemia (median [minimum–maximum] venous blood pH41°C = 7.394 [7.230–7.496] and 7.395 [7.248–7.458], respectively), relative to boat-tailed grackles (Quiscalus major; 7.452 [7.364–7.512]), but for different reasons. Mourning doves exhibited relative metabolic acidosis (lower venous blood pH, higher lactate concentrations, lower bicarbonate, and no significant differences in partial pressure of CO2 (pCO2) or partial pressure of O2 (pO2) compared with boat-tailed grackles). House sparrows exhibited relative respiratory acidosis (lower venous blood pH, higher pCO2, lower pO2, and no significant differences in bicarbonate and lactate concentrations compared with boat-tailed grackles). All birds captured by mist net and handled for banding and venipuncture experienced some degree of lactic acidemia; and values were greater in mourning doves (lactate, 7.72 [3.94–14.14] mmol/L) than in boat-tailed grackles (5.74 [3.09–8.75] mmol/L) and house sparrows (4.77 [2.66–12.03] mmol/L), despite mourning doves resisting least and being easiest to disentangle from the mist net. House sparrows were more susceptible to respiratory acidosis, warranting particular care in handling birds