1 Rising waters photo hike
Minnesota Valley National Wildlife Refuge, 8:30-10:30 a.m. Saturday.
The rising waters of spring mean excellent photo opportunities. A volunteer naturalist will lead photographers on an exploration of the refuge's site near the old Cedar Avenue Bridge, in Bloomington, which was notorious for flooding every spring. Bring your own camera and tripod. More information: www.fws.gov/refuge/minnesota_valley.
2 Bears: black, brown and polar
Lake Maria State Park, 1-2 p.m. Sunday.
Join naturalist and photographer Stan Tekiela for this lesson on North American bears. Learn about the creature's habits and lifestyles while enjoying some of Stan's bear photos. More information: 763-878-2325 or www.mndnr.gov.
3 Nature and Nordic walking
Cleary Lake Regional Park, 11:30 a.m.-1 p.m. Monday.