While 2015 is looking like a promising year for many, it's not looking too good for the Monarch butterfly. Experts are saying that this could be the year that they end up on the endangered species list. 

According to Reuters, Monarch populations are estimated to have fallen by as much as 90 percent during the past twenty years because of destruction of milkweed plants they depend on to lay their eggs and nourish hatching larvae. They are also threatened by widespread pesticide use and logging of mountain forests in Mexico and California, where many of them migrate for the winter.

So now, the U.S. Fish and Wildlife Service is planning a scientific review of whether the monarchs should be added to the endangered species list, which should take around a year.

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