This is the first year that San Diego will be participating in the City Nature Challenge. This event is the third instalment of an international competition between cities around the globe. Each city will be vying for most participants, species, and observations. This is a great opportunity to record the spread of invasive species in our city and participate in a fun competition.

Who: Anyone with an iNaturalist account
When: April 27th - 30th
Where: Anywhere in the San Diego City limmits
Why? For fun and for science!

more info at http://citynaturechallenge.org/
Be sure to join the iNaturlist project! https://www.inaturalist.org/projects/city-nature-challenge-2018-san-diego-county
Thank you @finatic for promoting this event