Short- and long-distance avian migrants differ in exercise endurance but not aerobic capacity

BMC Zoology

Table 3 Descriptive statistics of species’ average body masses, oxygen consumption rates and haemoglobin concentration

Species	Migration strategy	Sex	Body mass (g)	RMR_min (ml min^− 1)	N	MMR (ml min^− 1)	n	Hb (mg ml^− 1)	n
European robin Erithacus rubecula	SD	M	16.9 ± 1.88	0.862 ± 0.098	10	5.368 ± 0.879	14	154.4 ± 33	14
European robin Erithacus rubecula	SD	F	15.2 ± 0.99	0.791 ± 0.076	19	5.340 ± 0.823	35	162.4 ± 19	35
Black redstart Phoenicurus ochruros	SD	M	16.5 ± 0.79	0.775 ± 0.070	7	4.623 ± 0.629	8	174.0 ± 23	8
Black redstart Phoenicurus ochruros	SD	F	14.7 ± 1.78	0.689 ± 0.082	16	4.855 ± 0.906	22	174.5 ± 15	22
Common redstart P. phoenicurus	LD	M	13.6 ± 1.31	0.657 ± 0.088	39	4.737 ± 0.942	47	179.5 ± 16	48
Common redstart P. phoenicurus	LD	F	13.7 ± 1.33	0.692 ± 0.121	31	4.472 ± 0.770	44	171.6 ± 25	40
Whinchat Saxicola rubetra	LD	M	14.6 ± 1.70	0.742 ± 0.151	43	4.854 ± 0.895	56	166.6 ± 23	59
Whinchat Saxicola rubetra	LD	F	14.7 ± 1.61	0.751 ± 0.084	21	4.813 ± 0.902	24	171.2 ± 19	24

Legend: Averages ± SD for male and female’ body masses (before MMR measurement), resting metabolic rates (RMR_min), maximum metabolic rate (MMR) and haemoglobin concentration (Hb) of four Old world Flycatcher species differing in migration strategies (SD short-distance migrant, LD long-distance migrant). Data had been collected in birds during pre-nuptial spring migration

ISSN: 2056-3132