An ornithologist uses stable isotope ratios to estimate that a bird spends 40% of its migration time in regrowth forest (high food), losing 1.2% body mass per day there, and 60% in open habitat (low food), losing 2.1% per day. If the migration lasts 25 days, what is the total percent mass loss? - RTA
How Bird Migration Strategies Reveal the Hidden Cost of Travel—and What It Means for Conservation
May 08, 2026
How Bird Migration Strategies Reveal the Hidden Cost of Travel—and What It Means for Conservation
When scientists track migration patterns, a surprising insight emerges: birds don’t just fly—they consume, recover, and adapt at a precise metabolic cost. Recent studies, grounded in stable isotope analysis, reveal that migratory birds spend nearly
