Thanks @AWP! Bummer you were not able to see them. I honestly had low expectations of seeing them but apparently they're quite common in the park (same with the black howlers, coatis, agoutis and sloths) and I only had a few hours in the morning as the trip to Panama was for work but happy to have found a group. There were about 5 of them and not particularly disturbed by the human presence in the park which allowed for about 10-15 minutes of observation before they ran off.
