April 28, 2023 - May 7, 2023 City Nature Challenge City Nature Challenge April 28, 2023 - May 7, 2023 City Nature Challenge The 2023 City Nature Challenge takes place in 2 parts April 28 – May 1 Taking pictures of wild plants and animals. May 2 – May 7 Identifying what was found. City Nature Challenge 2023 flyer Results will be announced on Monday May 8th.