Global Warming Means Hungry Birds
Birds all over the world are facing ?a scramble to keep up with spring,? says leading bird biologist Don Thomas of the University of Sherbrooke in Canada.
As global warming increases, spring comes earlier. The problem is that birds can?t adjust to these kinds of weather changes, since they are genetically programmed to breed at a particular time of year, when the insects and seeds they need are supposed to be most plentiful. When birds breed early, they have to expend a lot more energy getting enough food to feed their babies.
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