Migratory Pollinators Program
Table 2.
Data necessary for calculating the energetic cost of spring migration in a
pregnant female lesser long-nosed bat. Sources of data are cited in the
text except as noted below.
| Parameter | Value |
| Fat-free wet mass | 24.5 g |
| Fat deposited prior to migration | ca. 3 g |
| Typical flight speed | 40 kph |
| Resting metabolism* | 2.0 ml O2 per g-h |
| Cost of flight relative to resting metabolism** | 20X |
| Energy from one cactus flower visit | 0.45 kJ |
* McNab (1989).
** Winter and von Helversoen (1998).
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