Greenbelt litter patrol and restocking the Little Free Library.Parks and Rec puts out a monthly Greenbelt newsletter. You can read about the Anna Hummingbird which winters here.
https://clubrunner.blob.core.windows.net/00000003858/en-ca/files/homepage/feb-22-greenbelt-news/February_Adopt-the-Greenbelt-News.pdf
https://clubrunner.blob.core.windows.net/00000003858/en-ca/files/homepage/feb-22-greenbelt-news/February_Adopt-the-Greenbelt-News.pdf