Cathy Burgess has been recording the arrival and departure dates for red throated hummingbirds since 1986. The departure date for 2021 was observed to be September 18.
Here is a graph of her data. On a trend line basis the hummers are leaving a week later than they were 35 years ago. A bit more commentary can be found under the Climate Change Signals tab https://chandossier.com/climate-change-signals/
The Trent Aquatic Research Program 2020 report on Chandos Lake is out, and with permission from Dr Paul Frost, can be found under the Chandossier.com “Chandos Water Quality” menu tab. Or, via this direct link.
The KLSA has just released their 72 page 2020 report. It seems beyond excellent, and there seems much here to inform our own stewardship efforts at Chandos. Once I’ve had a better look, I shall try and highlight material that may be useful to us.
The recent interest in the radon health concern has resulted in some questions about radon’s origins.As we know, there is a concern about radioactive radon gas in dwellings, especially those in the Canadian Shield, such as those at Chandos. Where does this radon come from? This note attempts to be a bit of a primer on the subject.
The decay of uranium-238 into the radioactive gas radon-222.
Radon is the second leading cause of lung cancer, after smoking, but is first amongst non-smokers. Radon is a byproduct of the natural decay of uranium, which is a common element in the Canadian Shield. It is a radioactive gas that seeps up from the ground and enters the dwelling though cracks in concrete, open crawl spaces, and even through the water supply from a well. A well-ventilated dwelling may dilute the radon to a safe level, but a “tight” dwelling will allow it to accumulate and build up to hazardous levels.