For those who believe that Jesus was actually born on Sukkot, it is sometimes theorized that the "manger" was actually a substitution word/concept for the sukkah - a manger being a rude outdoor building similiar in conceptual construction to the temporary outdoor sukkah.
Manger... manger.... reminds me of the Italian verb “to eat” (mangiare)....which makes me hungry for all of the food we Jews eat on Sukkot— that Jewish holiday which is background to this article— an article which has nothing to do with your interjection.
The manger is a concoction of English translators.
Yeshua was definitely born in a sukkot that Joseph had errected in the pasture area where the Passover lambs were kept. At that time it is likely that as many as a million people were gathered in Jerusalem, so it would have been tough to find space on the temple mount to errect a sukka.