photo of Red Maid flower


A closer look at what we're doing to help plants, animals and people thrive.


Get Involved with Midpen!

Help us identify, tag and sort images from wildlife cameras at Midpen preserves, join a brand new team of volunteers that will support our community outreach events, building networks and sharing information about Midpen's work or engage in community science during the annual Sudden Oak Death bli

Searching for Bay Checkerspot Butterflies

Recently, Midpen ecologists took to a hill in Pulgas Ridge Open Space Preserve in hopes of finding endangered bay checkerspot butterflies (Euphydryas editha bayensis), an endemic species that can only be found in Santa Clara and San Mateo counties.  

Sign up for our newsletter to find out what’s happening in your open space!