my dads deeds had "no chickens" which was a shame as it was very rural. i wonder who makes these clauses?.
If he lives in an old estate cottage it would have been the original landowner - often the agri workers had lots of restrictions on what type of animals they were allowed to keep. Often to do with having cottages in a row and gardens not securely fenced off - so no goats, pigs or poultry. Agri workers often changed jobs every couple of years, so moving animals was not possible, esp with housing for them etc etc.
One book I read they were allowed a house cow, but not goats. Women milked the cow, sold the calf as early as possible, made the cream into butter (to be sold) and fed the skimmed milk to the pigs/children etc.