In their desperate attempts to conceal the fact that there are a
great number of animal deaths involved with the production of rice,
"aras" have been trying to get away with various tricks of deception
as well as just simple unsupported denial. "pearl" posted claims from
a rice farmer which I doubted, and still am not convinced of:

"Regrettably, there probably are some small animal deaths. However,
the number of deaths in a mile of rice harvesting pales in comparison to
the road kill on a mile of highway. Harvesters move slowly, and they are
not the high speed machines described in this article." - Kent Lundberg

Though there may be some element of truth in what Lunberg told her,
her dishonesty regarding the very presence of frogs in rice fields was
so extreme that it's great reason to distrust anything else she presents.
While searching for info on the subject, this did appear to back up
Lunberg's claim that there are a significant number of animals killed
on highways, but it also lets us know that contrary to "pearls"
unsupported and apparently very dishonest claim regarding frogs
in rice fields, it's more than likely that a LOT of frogs (and other animals)
are killed in rice production as well:
__________________________________________________ _______
Some roads, like U.S. 441 across Payne's Prairie in Alachua
County, and the Tamiami Trail that runs across Florida from
Miami to Tampa, are virtual abattoirs, greased with the gory
little bodies of "anurans," as frogs and toads are called
scientifically. "On Aug. 5, 1991 I stopped counting after
10,000," biologist Jim Weimer said in a 1996 interview,
describing a single night on U.S. 441 across Payne's Prairie.
"This was just one night. On May 2, 1991, there were over
5,000 Southern Leopard Frogs killed."

http://www.cnah.org/news.asp
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Since sometimes 10,000 frogs are killed in one night just by cars driving
down roads that frogs do not actually live on, only a fool would believe
there are not many many more killed in a day or two of machinery doing
the following to rice fields which such animals do live in:

http://tinyurl.com/kgdll
http://tinyurl.com/gbl56
http://tinyurl.com/g9qw8

With the combined information it should now be clear to anyone willing
to think about it realistically that even if more animals are killed on
highways than in rice production, many thousands are killed for rice
none the less, and many more thousands than that die from predators
after their shelter and habitat (the rice plants) have been removed.

Note: Paynes Prairie State Preserve has since constructed animal
protection walls:

http://tinyurl.com/jpr2z

along U.S. 441:

http://tinyurl.com/m4dz2