Well, I found the answer to my own question.
“….Pelleh Poultry’s award-winning squabs are young King Pigeons, a variety specifically bred for market (not the ones from Central Park) Featuring tender meat with a delicate gamy flavor, the King Pigeon breed is now the most popular squab bird on the market. At four weeks, the birds have achieved adult size but have not yet started to toughen from the exercise of flying. This is the ideal time to prepare them for the table. Pelleh Poultry receives the squabs from their supplier, David King. and are meticulously processed to the highest standards of (OU) kashruth…”
Well, not Chassideshe hashgacha but I guess pigeons may be more of a Litvishe delicacy