AUGUSTA — Maine’s state parks and historic sites are offering free admission to people who have loon license plates on their vehicles.

The Department of Conservation is offering free passes today and Sunday.

Residents can purchase license plates with loon images on them to help benefit state conservation programs. Of the $20 it costs to buy a loon conservation plate, $8.40 goes to the Bureau of Parks and Lands and $5.60 goes to the Department of Inland Fisheries and Wildlife.

Conservation Commissioner Eliza Townsend says the state is offering free admission to give thanks to loon plate holders.