I do not believe that fish eggs can be transported by birds or animals from one pond to another and remain viable.
You are probably right ewest, when I stumbled across the adhesive nature of GSF eggs it made me have some second thoughts. If I were to guess I suspect that the adhesive nature of lepomis egss is very short lived. I would not be suprised to find out that once an egg is fertilized that the protien coating in the exterior of the egg changes very rapidly and is no longer adhesive after less than a minute or so. Keep in mind that this is just an educated guess as I have nothing to back it up with.
Adhesive lepomis eggs would explain why I saw a couple of smaller BG last year scraping the river rock with their mouths in the center of a BG nest while the mature male was distracted by my presence.
If I were to guess I suspect that the adhesive nature of lepomis egss is very short lived. I would not be suprised to find out that once an egg is fertilized that the protien coating in the exterior of the egg changes very rapidly and is no longer adhesive after less than a minute or so. Keep in mind that this is just an educated guess as I have nothing to back it up with. 
