This year is the fourth celebration of California Biodiversity Day, which takes place every Sept 7th with events from Sept 3rd - 11th.

https://www.inaturalist.org/projects/california-biodiversity-day-2022-events

https://www.calacademy.org/community-science/california-biodiversity?amp

Hard to believe it’s already the middle of September… and that means we’re already half way through the second annual Los Angeles BioBlitz Challenge, sponsored by the Los Angeles Public Library’s Neighborhood Science Program and LA Sanitation & Environment’s Biodiversity Program.

https://www.larchmontbuzz.com/featured-stories-larchmont-village/la-bioblitz-challenge-is-back-upload-your-local-plant-and-animal-photos-by-sept-30/