Russian sayings about spring

Did you know that in Russian there are a lot of sayings about spring?

For example:

Май холодный – год хлебородный. If May is cold – a year will be full of grain.

Весна днём красна. Spring has beautiful days.

Пришла весна, так уж не до сна. Spring has come, so there is no time to sleep.

Грач на горе – весна на дворе. Rook on the mountain – spring in the yard.