17; Northern Raven

• A group of Ravens is called a: Unkindness.
• On our drive from Manitoba to Alberta we saw 12-14 dead deer along the road.  At each of these sites we saw 4-5 Ravens feeding on carrion.  The Northern Raven is an opportunist and  scavenger. 
• This bird is an omnivorous and is known to mate for life.  Which is long up to 40 years.  Speaking well of its large brain and having the ability to adjust to extreme climatic weather conditions.  8 sepcies are found around the world, the Northern is the one we see.
• They have a large range of vocalizations.  They are aggressive and have been known to steal from fox, wolves and bears.  Hunters and trappers will use their calls to find kills for baiting and trapping fur bearing animals.
•  It has a very divers vocalization for communication.  My favorite is a musical sound like that of a child's bike bell only a bit deeper in tone.
• These birds have a lot of history as evil watchers to creators to the first bird that Noah let out of the arc to search for land.