In Autumn (or known in North America as Fall), the leaves start to lose their green colour producing chlorophyll, and the other anthocyanin and carotenoid pigments are revealed in the weeks before the leaves go brown, die and fall off. During this time of the year, the forests turn various reds and oranges, and the tourism to appreciate this is known as 'leaf peeping'.
Sorbus americana, 'American Mountain Ash' .
Cornus stolonifera/sericea, 'Red-Osier Dogwood' fruits.
Sarracenia purpurea, 'Purple Pitcher Plant'. This is not related at all to the Asian Nepenthes Pitcher Plants, but they look quite similar.
Passerculus sandwichensis, 'Savanah Sparrow'. Found in open habitats across North America, with some populations wintering in northern South America.
Sciurus carolinensis, 'Gey Squirrel'.