From left to right and top to bottom are sequence photos of a female gyr/peregrine rolling up-side-down then going into a vertical stoop after a duck.

ducks flush

initiates roll

still rolling

more rolling

rolling over

rolling

more rolling

almost up-side- down

up-side-down

up-side-down

upside- down

upside- down

upside- down

upside- down

upside- down

starting to head down

 

headed straight down

still headed down

starting to fold up

adjusting stoop

more adjusting

still adjusting stoop

starting to tuck

adjusting tuck

starting to get after it

compressing body

really compressing body

more compressing

starting to un-tuck

getting ready to hit duck