While biking back from Pyrites along Miner St, two friends and I saw a very large, dark bird land on the road. It had a relatively small head of a reddish color and an enormous wingspan (around 3 feet). It took off when we tried to get closer so we couldn't exactly identify its coloration patterns or head shape, but its flight feathers looked a few shades lighter than its dark grey-black-slightly-brown body. I've been leaning towards turkey vulture, but I am not very familiar with that species and could be convinced otherwise.