Toronto Field Naturalists  –  Enjoy and preserve nature with us!
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Our Mission: Toronto Field Naturalists connects people with nature in the Toronto area.
We help people understand, enjoy, and protect Toronto's green spaces and the species that inhabit them.
Toronto Field Naturalists

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Toronto Field Naturalists
2 Carlton Street, Suite 1519
Toronto, Ontario
M5B 1J3

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Charitable Registration # BN119266526RR0001

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Junior Naturalists Online

Parents, kids, and the young at heart - TFN invites you to come explore our new Junior Naturalists Online Program! View nature videos, download brain teasers, print nature scavenger hunt sheets, and get inspired to leave the screen behind and explore nature in Toronto!

November Photo Spotlight
Kingfisher by Viktor Moroz
Earthworms and Sugar Maples
Posted October 2017
A new study from Michigan Technological University points to earthworms as possible cause for the decline and die back of sugar maples. Earthworms are not native to Canada or north-eastern United States. They cause damage by eating the layer of leaf litter that trees, seedlings and wildflowers rely on. Sugar Maples are particularly hard hit by this as 90% of their roots are in the top few inches of soil. With the protective leaf litter layer removed, the underlying soil dries out reducing the amount of water the trees have access to.
Bats Blind to Buildings
Posted October 2017
Tests of bat's use of echolocation has discovered that smooth vertical surfaces are "invisible" to them. Rough surfaces let some echoes return to the bat while smooth surfaces reflect the sound away, which fools the bat into thinking there is open space in front of it. In urban areas with bat populations, dead bats can be found at the base of buildings much like we find dead migrating birds here in Toronto. The researchers placed bats (one at a time) in a dark tunnel with felt-covered walls, except for one plate of smooth metal on the side near the end of the tunnel, then counted the number of strikes against both types of surfaces. They found the bats avoided the rough felt-covered surfaces but interpreted the smooth plate as a clear flight path. Horizontal smooth surfaces are not a problem for bats as they are interpreted as still water sources. Further information here.
NCC Lands Turned into Parks
Posted October 2017
The Nature Conservancy of Canada (NCC) has added two of their properties to Ontario's Provincial Parks and Conservation Reserves. One will be a new park called the Brockville Long Swamp Fen Provincial Park and the other is an expansion of Charleston Lake Provincial Park, including more than 8 kms of shoreline, wetlands, bare rock ridges and mature mixed upland and lowland deciduous forests. According to the NCC, "Brockville Long Swamp Fen is an important wetland complex in the South Nation and Kemptville Creek (Rideau River) watersheds. A provincially significant Area of Natural and Scientific Interest, this biologically diverse area provides habitat for several species at risk, including a variety of reptiles and amphibians." Charleston Lake Provincial Park is open to the public. The Brockville Long Swamp Fen Provincial Park will be a kept as a nature reserve.
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