Dave was up on my roof too. Just before they redid the foam coating they found him reading Mad magazine in the corner of the roof. He likes to eat that white stuff they spray on the roofs. He was seen talking to the birds and playing cards with them explaining how his car goes faster then their bird friends can fly. The birds stole his ladder and we heard him walking around up there few days later making motor sounds. I think the birds finally gave him a lift somewhere.