Bev, In 20 years of wildlife rehabilitation, I've never seen trichomonas (also known as canker) in sparrows - only in pigeons, doves and occasionally raptors. The most likely cause of illness in feeder birds would be salmonella, which is common in feeding stations that aren't regularly maintained, cleaned. Feeders should be thoroughly cleaned weekly with a 10% bleach solution: 1 part bleach, 9 parts water, then very well rinsed and dried. Also clean areas below feeders. Meredith Sampson Old Greenwich -- Katz1449@aol.com wrote: >From Bev Propen 1/2 Orange I was just reading some websites about house sparrow deaths and found this reference to TRICHOMONAS GALLINAE – TRICHOMONIASIS IN WILD BIRDS. Symptoms match what I was observing in the house sparrows....difficulty swallowing as the bird tries to eat. I will make sure to disinfect my bird baths as well, as this could be a possibility too. **************************************See AOL's top rated recipes (http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004) _______________________________________________ This list is provided by the Connecticut Ornithological Association (COA) for the discussion of birds and birding in Connecticut. For subscription information visit http://lists.ctbirding.org/mailman/listinfo/ctbirds_lists.ctbirding.org _____________________________________________________________ Click for free info on marketing degrees and make up to $150K/ year http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3l7sVRjcBUM2aELsVvkFL2meK3VvollvNWSJdESiPmsMMSxD/