The old ladies sitting on the side porch waved and called out to him, and he waved back at them. They sat like a bunch of ancient crows on a branch. Time was shooting them down, one by one.

philip jose farmer
Philip José Farmer (1918-2009) American author
“Stations of the Nightmare — Part One,” Continuum I [ed. Roger Elwood] (1974)
    (Source)

Collected with later parts in Stations of the Nightmare, Part 1 "The Two-Edged Gift," ch. 3 (1982).