i've heard a lot about ravens, yet never took the time to research much of the mythology behind them. they're brave birds & are so smart!
i notice lots of other little things - ladybugs for good luck, finding feathers & pennies to let you know your guides are around you or people who have already passed are sending messages. stuff like that!
Its true, there are so many little messages and signs when we are open to seeing them. I find it so comforting.