Big Birds vs Little Birds

[brobear]

Crows will harass a hawk, an owl, or even an eagle. Why? Also I have seen smaller birds harass a crow.
              
                                                                                    

[OldGreenVulture]

Smaller birds are generally more manuverable in the air compared to larger birds. Falcons and skuas as well as frigate birds have exceptional manuverable flight abilities. Owls are pound to pound built for power but lack manuverablity in comparison to hawks, falcons etc. Owls are more agile and manuverable than eagles even at equal weight but the former is not as acrobatic.

[OldGreenVulture]

American Crow Mobbing a Bald Eagle, Kirkland, Washington

An American Crow (Corvus brachyrhynchos) dives to attack a Bald Eagle (Haliaeetus leucocephalus) as it watches over its nest in Kirkland, Washington. The nearly full moon is visible in the background. Crows are often seen chasing hawks or eagles in flight, or repeatedly diving at them when they perched, a practice known as mobbing. Research is inconclusive, but scientists think this harassment helps to force the birds of prey to hunt elsewhere, ultimately reducing the threat to the crows and lowering competition for food..

livingwilderness.photoshelter.com/image/I00007LQBmvR0Rm0

[OldGreenVulture]

A blackbird hopped on the back of a bald eagle, but it turns out that it wasn't a joyride

edition.cnn.com/2019/07/09/us/blackbird-rides-bald-eagle-back-trnd/index.html

[Eaglehawk]

2 Smaller Seagulls v American Bald Eagle