Birds
Herring and herons: signs of the Charles River’s vast improvement
From Boston’s Museum of Science to the Watertown Dam, the Charles River this spring was rife with river herring swirling in the water like scores of baby sharks. Near the dam, dozens of the aptly named herring gulls perched on rocks and plunged for the fish, while great blue herons waded out into the shallows […]
If only humans could breathe like yellow-rumped warblers
Mammals, including humans, inhale oxygen and exhale carbon dioxide, which sounds like a fairly simple process. But compared to birds, we’re very inefficient. When we breathe, we inhale oxygen-rich air into our lungs. This fresh air mixes with old oxygen-poor air already in the lungs. When we breathe out, we breathe out this old stale […]