This weekend looks to be a great one at DeKorte.

   On Saturday, the Meadowlands Environment Center presents “Butterflies Everywhere!,” an educational program featuring butterfly farmer Rick Mikula and his live and collected specimens of these beautiful creatures.

   Appropriate for anyone over age 5, the program is $4 for MEC members and $5 for the general public. 1 p.m. start time. For more information, call 201-460-8300.

  On Sunday, there's a free twin bill — the First-Sunday-of-the month Bird Walk with Bergen County Audubon Society at 10 a.m., followed by a talk and reading by the author of the new book "Salt Marshes."

    The walk  starts outside the Meadowlands Environment Center and runs roughly 90 minutes. We will look for shorebirds, waders, Ospreys and migrants. Meet in front of the Meadowlands Environment Center. To rsvp, contact Don Torino of the BCAS at greatauk4@aol.com or 201-636-4022. 

    At noon, Rutgers biology professor Judith Weis will present her new book “Salt Marshes: A Natural and Unnatural History”  at the Meadowlands Environment Center.

    Weis, an expert on “recovering” marsh’s like those surrounding the Hackensack River, and the critters that live in them, will discuss the critical importance of these ecosystems and how, for too long, they have been used as dumping grounds.

    The talk is sponsored by the New Jersey Meadowlands Commission as part of its 40th Anniversary Celebration.  For more information, call 201-777-4600 or visit the “Events and Alerts” section at www.njmeadowlands.gov.