Ornithomimids with filters?

[RidenbaughD@aol.com]

This time, I have absolutely no reference for this topic, except that a month 
or two ago a friend of mind mentioned that there was an article in an older 
issue of Nature that talked about Ornithomimids having filters in their 
mouth, not unlike that of ducks.  Since I do not have a subscription to 
Nature, I was wondering if anyone here could provide me with some more 
information on the subject. Any help would be most appreciated. Thanks.

                                                                - Donald E. 
Ridenbaugh