LA CROSSE, Wis. (WKBT) -

The harsh winter is expected to take a toll on Wisconsin's deer herd and the DNR is asking for help tracking it.

Officials are expecting it to be worse the farther North you go.

It's especially troubling after last year's cold lingered into May resulting in one of the smallest herds since the 1990's.

This year, the DNR is turning to the public to call if they find a deer dead or struggling to survive. "Winter always takes some deer, it's the overall herd that we look at. Getting some numbers in, making sure it's not stressing out the whole population is key here," said DNR Wildlife Biologist Ron Lichtie.

Preliminary numbers show about 225,000 deer were killed last year, down 7% from the year before.