BIOL 2903 Lecture Notes - Spruce Budworm, Hooded Merganser, Boreal Owl
10 Feb 2014
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Lecture 3 b , natural history of ontario 1. Boreal forest or bf ( continue: spruce and balsam fir needles are food for a very famous caterpillar. These 3 warblers" species are commonly known as budworm warblers: During budworm outbreaks these warblers nest twice ( thus have 2 nests) and have more young survive. How can they feed on the same food without competition: they split the resources by feeding different parts of tree this is call. If the trees dies thus warblers do kill the trees , other animals benefit. Such as the bark beetles which eat the wood of the trees. Lecture 3 b , natural history of ontario 2: they are eaten by woodpeckers such as, the black- backed woodpecker have bigger beak, american three- toed woodpecker, woodpecker. Note: well their beak size this allows these two woodpecker to. Niche partitioning: trimming aspen are also call poplars.
