Rhyming Cygnet

“A poison used on cropland to kill rodents also killed at least a handful of more than 2,000 snow geese that fell dead from the sky in Idaho.” (http://uk.reuters.com/article/2015/05/16/us-usa-geese-idaho-idUKKBN0O100S20150516)

So, how much is a handful of goose?
The eco-detective follows the clues…
Snow fell from the sky like a blanket of fleece.
But how much is a handful of geese?
A poison on crops saves farmers on cats;
A dead goose in the hand’s worth a bushel of rats.