For many of us, though, it's not just the damp drizzle; it's also the early darkness, the dying of the light. I saw this first hand in the parakeets yesterday. Lulled into autumnal complacency by the mid-70 temps, I brought the birds out onto the deck to share the glass-topped table with me as I worked.
They were chattering and happy, doing their best to respond to wild bird calls ... until the sun began slanting lower and lower in the sky. Then, as if on cue, they quieted and calmed, began tucking their heads into their wings.
Even when it's warm, the early darkness has its way with us.