In spring, millions of songbirds — like the Orchard Oriole — migrate north across the Gulf of Mexico, from the Yucatan to the southeastern U.S. When birds encounter storms or headwinds, many may die. Why risk such an end, when they could migrate north along the length of Mexico? It's likely that many birds evolved to take the potentially perilous trans-Gulf route because it is direct and considerably faster, putting the birds on the best breeding territories more quickly.
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