SRS, Thank you. The warbler wasn't borrowed. It was in my backyard. The photo wasn't high enough resolution for a full size image.
The crows here always like to wash/soak their food before eating it. It's a challenge to keep any water clear of crow debris.
JHW, I've often wondered the same thing (is the nutrition worth the effort it takes to get it?) Birds must have much more efficient metabolism than humans do?