Honey Comb

Maybe they aren't real honey bees.. there's others that swarm. Try to isolate one of them and see what kind it is.. set up a feeding area with a sugar solution or something.. Try not to get them pissed off.. don't go anywhere near them with cologne on or other animal near by..BE CAREFUL..
BTW, aren't any animal control services available to you?
they could help.

Nicholas, it has been here since 3 months or so....

You are correct to mention that Alice.. Where I come from they look for the swarms in the spring.. finders/catchers/keepers.. they are worth money..As I understand, since last year in NY city there's now a variance available to keep honey bees on private property (usually roofs and gardens) to be used as pollinators.. its been a success apparently..

Beehive...!!

Alice, good point. There should be an alternative solution.

I may have a swarm in my Palm tree, but I am not anxious to have one like that on the porch. Why can't they put out a suitable box rather than destroy them?

Not if its a swarm.. they will load up prior to leaving with the queen and thats it.. how long have they been there? Usually, they dont stay long in a spot until they find a suitable nesting hole..like any enclosure from the elements..

Nicholas, so will there be no honey collected in it?

Thanks Nicholas for the details!

I don't think this is a honey comb! It's a bee colony on the move! They have a queen in that swarm somewhere and they are looking for a more permanent hive like a manmade box or a log or hole of some sort to settle into. Be careful of them because they do feel more vulnerable and will attack easier. If they are honey bees anyway.
Good luck
Nick