Owl

Seen or heard during daylight - bad luck

Looking into an owl's nest - sadness for life

Heard hooting by a pregnant woman - baby is a girl

Oyster

Oysters should only be eaten in months with an R in them

Aphrodisaic properties (dating back to Roman times)

Carrying an oyster shell - good luck

Peacock

Revered by Hindus as sacred

Greek mythology - tail consists of the eyes of the giant 'Argus'

Peacock feathers indoors - bad luck

Hearing a peacock cry - storms approaching

Pig

Once worshipped in Crete and Egypt

Crossing your path - unlucky

Running with straw in it's mouth - storms approaching

Driving pigs indoors On Beltane morning - good omen

Porpoise

Harbinger of good luck

Seen swimming north - fine weather

Seen swimming south - bad weather

information sources:

"Dictionary of superstitions" by David Pickering

"The encyclopedia of superstitions" by Christina Hole