A goose is more watchful than a chicken and can see better. That's what I read anyway and they alert the chickens which gives them a chance to run for shelter. Ducks probably have the same visual ability.
Geese do not protect my chickens from hawks but I feel their larger presence makes the...
So sorry about your duck. :hugs
What time of day were they taken? Was the drake locked in the duck house?
Although it's not guaranteed but having a bigger animal hanging with them, such as a dog, goats or donkeys, etc. makes the hawk fearful. That has been MY experience anyway.
And lots of...