Bolton - I noticed that your street has NO piggies. Since they are your pigs, I think you can capture more than one at a time. You could probably let five out onto your street and they will live happily eating the street trees.
I need to learn Herding or something first, currently learning Mining 3 which is taking a while but once I have finished it i'll let some piggies go, thanks Kooka :D
Bolton - like kooka said, let me know if you want someone to come capture some, i've already got the skill and i live pretty close in groddle forest... i could even bring ya a butterfly or chicken if you wanted some diversity in your yard... =)