Thanks Dave - the fall colours usually are with us for a couple of weeks or a bit more. Once the leaves have turned, the first bif wind or rain storm will dislodge them and we have bare branches from late October through mid-May. Different tree species change at different times. In our area the sumac change first, often in late August, the sugar maples tend to be next (followed by other hardwood species), with birch and poplar being among the last trees to change colours.
Something that is a bit unique about Eastern North America is that certain species can turn red. The sugar maples are probably the best known species that have this characteristic, but the red colours only occur at the edges of the forest. In the interiors, the leaves turn yellow. This means that we have a blend of colours; reds, oranges, yellows and of course green from species that turn later or conifers that retain the green colours throughout the year.
I hope to get some nice fall colour shots tomorrow as we are spending the day hiking in Algonquin Park, an the leaf colours are peaking right now. Unfortunately, the weather forecast is showing overcast skies and a chance of rain...