When you see a lot of black birds is that a good omen or a bad omen?

As a child I remember a rhyme that told of the significance of the numbers of Blackbirds seen at a time.

One is for bad news, Two is for mirth.

Three is a wedding, Four is a birth.

Five is for riches, Six is a thief.

Seven is a journey, Eight is for grief.

Nine is a secret, Ten is for sorrow.

Eleven is for love, Twelve for joy tomorrow.

There is another rhyme related not to blackbirds, but to Corvids (ravens and crows). I can't recall the entirety, but here's what I remember:

One is for Sorrow, Two are for Joy,

Three for a Girl, Four for a Boy,

Five are for Silver, Six are for Gold,

Seven are for a secret never to be told.

If anyone knows the rest of this rhyme, please feel free to add it!