Loon Watch

Each year, Bridge Lake is home to families of Gavia immer, the common loon. There is nothing quite as evocative of the spirit of the northern lakes as the call of the loon.

      Loon on nest

Loon on nest

The survival of loons has always been tenuous. Typically only two eggs are laid in a nest that is vulnerable to natural predators (dogs, fox, mink, gulls, eagles ...) and wave action (storms, motor boats ...). Chicks that successfully hatch from the eggs often fall victim to predators or their own aggressive siblings. Loss of suitable shoreline habitat adds to the challenge for nesting pairs.

To help preserve the loon as a ‘seasonal resident’, the Friends of Bridge Lake have installed four loon nesting platform on Bridge Lake and one on Henley Lake. Click here to find out about this pilot project.

We are encouraging all users of our lakes to boat responsibly and protect the shoreline. To learn how you can help to protect our loons see the following short information sheets:

up

Bridge Lake Loon Watch     

Loon Survey 2017

Since the summer of 2009 Friends of Bridge Lake have taken part in the Canadian Loon Survey. Here are the results of our 9th season.

Thanks to the work of additional volunteers in 2017 all of Bridge Lake was surveyed. We had two heavy windstorms in June which presented a challenge to early nesting. Due to wildfires & smoke there was less boating in July and August.

Maximum number of adult loons counted: 36
Mated pairs: 14-15
Number of hatched chicks: 8
Number of surviving young adults: 4, including a surviving set of twins which is very special


Loon Survey 2016

Unfortunately we were short of volunteers, therefore only a third of Bridge Lake, the south-west end, was surveyed. The maximum number of adult loons sighted was 12. Over the years we have observed numbers as high as 19. Since 2014 these numbers seem to have dropped.

The same is true for the number of pairs who try to breed. This year only 3 pairs were counted. We had as many as 6 in earlier years.

The good news is the number of chicks. We had 3 this year after having only 1 in 2015 and 2014 and none in 2013. It seems that this season every pair in the bays that were surveyed managed to raise 1 chick.

At least one of the four man-made platforms on the lake was used by the birds. Let’s hope that increases next year, because data collected by Bird Studies Canada shows that loons using nesting platforms have better reproductive success.

up

Canadian Lakes Loon Survey     

The Canadian Lakes Loon Survey began in Ontario in 1981. The intent is to track trends in loon populations and learn more about human impact on those populations. Over 1000 volunteers across Canada contribute to the survey database by filing reports once a month over the summer indicating the number of loons on the lake, the number of breeding pairs and the number of successful hatchings and the number of surviving young.

Lac Des Roches has participated in the survey for over 15 years. For the first time there are five volunteers conducting the survey on Bridge Lake, Henley Lake and Muddy Lake. If you would like to take on this role on another lake in the area (Roe Lake, Sheridan Lake, Webb Lake ...) then let us know and we will help to get you started.

Information about the survey can be obtained from Canadian Lakes Loon Survey.

up

More Information     

To learn more about the common loon and its relatives the yellow-billed loon, arctic loon, pacific loon and red-throated loon see