BIOL 2903 Lecture Notes - Lecture 20: Limestone Pavement, Eastern Bluebird, Chicory
15 Apr 2017
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Lecture 20 fallow fields (meadow voles + predators) & alvars. Snow geese & rosses goose & canada geese: use flooded fields (like tundra for them) for feeding (stop overs while migrating). Fallow fields: fields let go wild become fallow fields. They have short tails (good habitat for when in the tundra zone). They can breed at the age of 23days (large population expansion at a fast rate). Red foxes and coyotes hunt in these fallow fields (eating meadow voles) thus benefiting from them. Northern shrike also eats meadow voles (raptorial bill and songbird feet). They are only present in late fall and winter in our area. Long tailed and short tailed weasels also eat them. -coyotes only appeared in ontario around 1900 (came in through lake of the woods & They were once called brush wolves, and were heavily persecuted. When they came in ontario they hybridized with wolves (they were separated by a habitat barrier).
