Hi all,
I realize that I had never updated the Hummingbird departure dates as recorded by Cathy Burgess. (16 Sept 2023)
The updated graph can be found in this section of the web site: Basically the birds arrive around May 8 and depart around Sept 16. The trendline indicates that the birds are leaving about 8 days later in 2023 than they did in 1986.
Chandos Lake Science 2 