Be Part of the Count: Explore and Record Nature at the Hempstead Plains. Join the Friends of the Hempstead Plains for a Bioblitz supporting the City Nature Challenge. Saturday April 25th from 10 am - 12 pm at the Hempstead Plains Education & Research Center. Be sure to dress appropriately and to download the iNaturalist app ahead of the Bioblitz. For more information, check out the City Nature Challenge 2026: Long Island on iNaturalist.