Unformatted text preview: -if they flapped the entire way there: o cost = 3627 mg-THEY MAKE IT AND ONLY USE ABOUT 30mg OF FAT Monarchs gain height with little energetic cost-use thermals to life without using too much energy-use anabatic winds-use slope lift for BIRDS, both magnectic orientation and sun, are sufficient for orientation, but neithe is necessary. Sun is a stronger cue than magnetic....
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- Fall '09
- Energy, Migrate Low metabolism, unfavorable flight metabolism, Monarch enery budget, 9.4 Kcal