Ravens moved into my area about 4-5 years. This, the biggest of all corvids, was certainly less common in Ottawa since we moved her in 1990. I really like these birds but have, until the last couple of weeks, be unable to get any decent photos of them. This year a family of 4 can regularly seen terrorising the local nests of grackles, red-wing blackbirds and other songbirds.
Usually I'm cooking something on the B-B-Q or mowing the lawn when the action takes place. Last night was different. 
All photos taken with Canon 40D and Sigma 50-500mm Handheld.
1. Male Red-wing Attacks
2. Pressing his advantage as the raven banks to avoid him
3. A Grackle take its turn. Attacks from above seem to get the best result.
4. Grackle pulls us for another strike.
5. Another Dive bomber attack.
6. Follow through
well said Stephen... looks like a juvie raven getting initiated in the RWBBs territory.... fine shooting.
