This is a new hive, package installed April 1. I'm a newbee to ... bees; it's my first hive. I'm located in central MA. Is it possible already to see swarm cells, possibly capped? Pics:

The local bee expert looked at the photos and told me they are supercedure cells, not swarm cells, and I should probably go cut them out. Should I go about getting in there ASAP and breaking them off? In the meantime, I've installed a slotted bottom board during the above pics, to see if that will help matters at all. It looks like there's quite a bit of worker brood, and I'm not sure if those darker cells are a problem or not. Thanks for your advice!