Likely not. There's some weird agricultural laws because of the great depression. You can mail raw vegetables through the USPS as long as they are addressed and have correct postage, for example.
Chickens lay a shit ton of eggs, up to one a day each if they're mature and well fed. Even with a small flock it's easy to run out of room in the fridge. You have to get rid of them somehow - so why not give what you can't use to the neighbors? It's not at all uncommon, I've been on both sides of this "transaction" hundreds of times.
As a vegetable gardener that is occasionally snowed under with tomatoes or peppers, I'd love a neighbor with chickens who would occasionally trade a couple dozen eggs for a couple hundred cayenne peppers or something.
Now you do, nice to meet ya lol. Of course when I ran out of room in the fridge I'd leave some on the countertop. The fridge is just a more convenient place for me, plus if anything they'll keep longer in there, which is more important when you have a queue of 6 dozen eggs because your hens won't chill out
Yeah it’s a surprisingly big trend here. And the people I know with chickens are suburban families. They are not on farms and they do not have a ton of other pets. Just a dog or cat.
This is because lead in fuel was legal until just a few decades ago. This means that for 70+ years, any houses near roads will have lead contamination in the soil.