April sweet sleeping. Una rondine non fa primavera. One swallow doesn't make spring. Submitted by Bukit View Secondary School of Singapore. The low flight of rooks indicates rain.
Birds flying low, expect rain and a blow.
If the lark flies high, expect fair weather. When swallows fleet soar high and sport in the air, the weather would be clear. Wild geese fly high in pleasant weather and fly low in bad weather. Everything is lovely when the goose honks high. If the rooster crows on going to bed, you may rise with a watery head.