This fall, reports from New Mexico and other western states reported hundreds of dead birds and many others alive on the ground and clearly incapacitated. The true numbers aren’t known but certainly reached into the hundreds of thousands. This mass die-off shocked many and made news around the world. Scientists are still analyzing samples and testing theories, but the most likely culprits include an unusual cold snap along with the extensive fires and smoke.
Early studies reveal that the birds appeared to have oddly low body fat, suggesting that they had begun migration undernourished and underweight. Migratory birds need to put on extreme levels of body fat in order to complete the feat of long-distance migration. In this instance, it appears these birds were not prepared. Since a disproportionate number of the dead birds were insect eaters, it seems logical to conclude that either they weren’t able to find the insects they needed or something pushed them to migrate before had they eaten enough to store the fat needed for their journey. If the research bears this out, it should be yet another warning to us here in Maine.
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