Walks start at 8 a.m. at the Carty Unit of the Ridgefield National Wildlife Refuge in Ridgefield. These last two to three hours but participants are welcome to join for as long or as short a time as suits them. Walks are free with $3 refuge admission fee. To register for the walks, email ridgefieldvolunteer@fws.gov. Walks will occur on the following dates and will be led by either Ron Escano or Robert Vanderkamp: