I just wanna say, please don't lynch me when I give my opinion but...
I have no problem with people flipping livestock animals. I do not being lied to, no, but, I have no problem with anyone (even myself) flipping livestock.
Now, if you had said you gave away a purebred puppy or a cat and they flipped that, well that's different. We don't eat dogs. or Cats.
I don't give my roosters away. I usually take extra roosters to auction and get $2-$4 for them when the market is good. There are people who will come get your free roosters to use for some unsavory practices, so really I'd be glad that they are selling them and not using them for something that's illegal.
Now, I will admit I've flipped LOTS of livestock. Our income is pretty limited, so if I'm able to get a free rabbit, goat, chicken, duck, etc. and it's not something I'm working with, heck yea I flip it!
But, I don't tell people I'm going to take it home and keep it or love it forever.
Last year we found 5 free pygmy goats on CL. We spent $20 in gas going to pick them up because the lady needed them gone right then because they couldn't keep them penned and they were tearing up her MIL's yard. We told them we weren't 100% sure that we would keep all or any of them, and they said they didn't care what we did with them as long as they were gone.
I flipped those goats for a $200 profit. Do I feel bad? Nope, because they all got good homes.
Neighbor guy up the road had almost 100 chickens. He was evicted out of his home and they had to go right then. He told us he didn't care what we did with the chickens, but he had a qaggle of geese he wanted kept together. My mom took his gaggle of geese, and they're happy as can be! The chickens were mostly silkies and a few Ameracauna and Leghorns. We sold off the worst looking birds at Auction, and it paid for my feed for about a month. The rest we cleaned up and sold locally. One guy traded me a pair of peachicks for a quad of Black Silkies!
So, no, I wouldn't be mad that they are selling them. Once you gave them away, they are theirs to do as they will with. I WOULD be mad about being lied to, but what can you do? A lot of people do that to get what they want to make a fast buck.
I realize there are people out there who don't believe you should sell something you got for nothing, but that's what bartering and flipping is about.