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Environment, Weather, and Green Living
Reply to "Do the birds/trees/plants know more than us when it comes to spring?"
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[quote=Anonymous]Birds can sense a drop in barometric pressure when a storm is coming. Not sure about plants. But people with arthritis can also sense barometric change, in a painful way. Birds also migrate based on changes in the daylength that affects their hormones. This isn't the same thing as being sensitive to temperature (although maybe some studies have looked at that, too). This is a problem for birds that migrate based on the same old changes day length, even as the timing of their food (insects, seeds) changes because of climate change in their winter and summer destinations. So, a bird that leaves the winter destination on a normal schedule could arrive on their breeding grounds after insects peak. Some birds leave really early, though, so these would be the ones to reproduce and continue the species.[/quote]
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