When: April 25–28, 2025
Get connected with nature! Join the City Nature Challenge, a global effort to document nature in urban areas and all around us. During this four-day bioblitz, nature enthusiasts and casual observers take photos and upload them to the free iNaturalist app to share their observations and help document biodiversity in cities around the world. Learn about nature in our local area and enjoy the benefits of being outdoors.
Carnegie Museum of Natural History is pleased to partner with various local organizations participating for Pittsburgh and its surrounding counties. The Pittsburgh Region joins hundreds of cities with more than 80,000 participants around the world for this exciting global project!
How to Participate
Participating in the City Nature Challenge is easy and free!
First, download the free iNaturalist app.
From April 25-28, take photos of any nature you observe – plants, insects, wildlife, even animal tracks, bird calls, and plants growing in sidewalk cracks – and upload them to the app. (Please note, if it’s planted or taken care of by people it is not wild. Mark it captive/cultivated in the iNaturalist app.)
From April 29-May 1, help identify species observed by other challenge participants to help build a better understanding of biodiversity in our region.
Observations in Pittsburgh and the surrounding counties will count towards totals for the Pittsburgh Region.
Educational Resources: Educators can get a free toolkit to help learners participate!
Read City Nature Challenge Stories
