Due to COVID, we will keep the group small and if need be split the group to only have 8 people per group.

Due to COVID we will keep the group small. If the group is to big we will split into two groups. Join local birding expert Mike Coulter as he guides us through the Great Marsh, an ancient periglacial marsh and the largest marsh in Southeastern Pennsylvania. This event is hosted by the Great Marsh Institute, […]

Due to COVID we will keep the group small. If the group is to big we will split into smaller groups. Join local birding expert Mike Coulter as he guides us through the Great Marsh, an ancient periglacial marsh and the largest marsh in Southeastern Pennsylvania. This event is hosted by the Great Marsh Institute, […]

Due to COVID we will keep the group small. If the group is to big we will split into smaller groups. Join local birding expert Mike Coulter as he guides us through the Great Marsh, an ancient periglacial marsh and the largest marsh in Southeastern Pennsylvania. This event is hosted by the Great Marsh Institute, […]

Diana Cormack, a PA Master Naturalist trainee, will be leading a walk to learn how to ID plants and trees in the late winter on trails around the Great Marsh. We will keep this walk to 10 participants so please RSVP to: greatmarshinstitute@gmail.com

Due to COVID we will keep the group small. If the group is to big we will split into smaller groups. Join local birding expert Mike Coulter as he guides us through the Great Marsh, an ancient periglacial marsh and the largest marsh in Southeastern Pennsylvania. This event is hosted by the Great Marsh Institute, […]

GMI Spring trail clean-up March 20-21, 2021 Please join us the weekend of March 20-21 to help get the trails cleaned up around the Great Marsh. Due to COVID we won't be able to provide food, but feel free to bring a picnic lunch. Also bring your own tools (clippers, weedwackers, chainsaws and/or hedge trimmers) […]

Come join us at the Great Marsh for our monthly bird walks. The Great Marsh is a premier birding location in Chester County and to date has recorded over 185 bird species. Migration is ramping up in April and some of the more interesting species we can expect to find include: Blue-winged Teal, American Black […]

Come join Diana Cormack, a PA Master Naturalist trainee, on a nature walk around the Great Marsh. Bring binoculars if you have them to help ID the birds and bring any plant ID books to help with identification. Also boots are always a good choice as we have lots of springs on the property. We […]

Come join Jim Moffett, a local photographer and naturalist, for a walk around the Great Marsh to learn about taking nature photography. We will keep this walk to 10 participants so please RSVP to: greatmarshinstitute@gmail.com

Come join Diana Cormack, a PA Master Naturalist trainee, on a nature walk to learn more about the Great Marsh, an ancient periglacial marsh and the largest marsh in Southeastern Pennsylvania. This event is hosted by the Great Marsh Institute, a non-profit with the mission of supporting scientific studies and educational opportunities. Bring binoculars if […]

Come join us at The Great Marsh for our monthly bird walk on Sunday, May 17th at 7:00AM. The tail end of migration will still be happening and we have recorded 132 species during the month of May here at the Great Marsh. Past sightings of note during the 3rd week of May include: Yellow and Black-billed […]