Birds: Something Strange is Happening
And it’s NOT related to the oil spill! – If we could talk to the birds, what would they tell us? They would say, “Help, we’re shrinking!” US songbirds are getting smaller, becoming lighter in weight with shorter wings. This has happened in the last 50 years, which leads scientists to conclude that it’s a result of climate change. Biologists call this “Bergman’s Rule,” which states that animals tend to be smaller in warmer climates. Even in the same area, animals living at higher elevations (such as on mountains) are smaller than the same animals living down below. In the case of birds, this doesn’t seem to be harmful to them.
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