Their system used reverse osmosis to remove a significant portion of the water from the sap, before boiling.
They had tubing running from their trees at this site, that drained into a plastic tub which they would pump it out of when it was full. (Little G took a video of that and it is at the bottom).
The second sugar camp we went to, also was home to a pair of bald eagles. We only saw this one, though they said both of them had been sitting there earlier. He was watching for fish in the creek below.