I'm sorry to hear of your dilemma.
In my last neighborhood there was pond across the street, behind other homes, and only 9 ducks---and they made a huge mess throughout the neighborhood. I can only imagine the damage caused by upwards of 100 of them.
Get a copy of the letter that the HOA sent to her that she ignored--to use as evidence---and then sue her for Nuisance in small claims
court. You can sue her for as much as $5,000 and I can pretty much guarantee, you WILL get her attention.
Nuisance is defined as a substantial interference with the right to use and enjoy land, which may be intentional, negligent or ultrahazardous in origin, and which results from a defendant's activity.
I'm relatively certain that with a couple of photos of the mess left by the ducks as well as a one of the huge population you describe, that the judge will rule in your favor.
I wish you the best in 2010.
Thank you very much for having allowed me to assist you. Please, remember that I only receive credit for helping you when you Accept my answers. Until then your payment is simply held on deposit. Subscription customers incur no additional charges by Accepting. So, please click the ACCEPT icon. Thanks again.