Either the sparrow doesn't know the frog is there, or doesn't know the danger.
The bird seems very much unconcerned. Or maybe it figures things out at the last moment...
...and moves to a higher perch, but it's not far enough away. The frog leaps,
And faster than a photographer, he has the bird and drags it to its death.
Don't chew with your mouth open! It's rude.
Burrrp oh pardon me.