Canada geese fly in a 'V' formation to reduce their energy costs. Each bird is able to take advantage of the reduced wind resistance behind the lead birds. To avoid turbulence they fly at high altitudes.
Canadian Tree Guide
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Sumac
poison sumacRhus vernix L.
Poison sumac is a small (<7 m) tree. The fruits and leaves are, as the name infers, poisonous.
staghorn sumacRhus typhina L.
Staghorn sumac has stout woolly branches, and during the winter they resemble the velvety antlers of a deer. In the autumn the leaves turn a spectacular shade of red.