Avian flu outbreak comes for Colorado

Driving the news: Colorado Parks and Wildlife officials confirmed the first cases of avian influenza on March 24 in Sedgwick County among a handful of wild snow geese and Ross' geese, agency spokesperson Travis Duncan tells Axios Denver.

• The findings prompted the Denver Zoo to move its birds indoors, including penguins, lorikeets and bald eagles, for at least 28 days due to the risk posed to the animals.

What they're saying: Experts suspect springtime migration could be contributing to the virus' rapid transmission, most likely through an uptick in infected droppings.

The big picture: No commercial or backyard flocks in Colorado have tested positive yet for the virus, USDA data shows. But concerns are growing nationwide that the fast-spreading disease could devastate the poultry industry.

• It took years for it to fully recover from a similar outbreak nearly a decade ago, the New York Times reports.

What to watch: The latest strain hasn't infected humans, but virologists say those odds could increase as the virus is passed and potentially mutates.

This story first appeared in the Axios Denver newsletter, designed to help readers get smarter, faster on the most consequential news unfolding in their own backyard. Subscribe here.