Color Vs. Flight: Are Darker Birds' Feathers Weighing Them Down?What is heavier: 1 kilogram of feathers or 1 kilogram of steel? Whilst the answer to this classic riddle is that they both weigh the same amount, it may be surprising to discover that the color of a feather can result in different weights. The rest of this article is behind a paywall. Please sign in or subscribe to access the...
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