Robins will perch on the topmost branches of trees and whistle when a storm is approaching.
Rooks.
If rooks fly irregularly and high, and seem to fall, expect rain.
Rooks dart and swoop through the air, sparrows group together and keep up a discordant chirping before rain.
Rooster.
A crowing rooster during rain indicates fair weather.
When the roosters go crowing to bed they will rise with watery head.
If a rooster crows on the ground, it is a sign of rain; if he crows on the fence, it is a sign of fair weather.
Sea Birds.
If sea birds fly towards land and land birds toward the sea, expect wind without rain.