The Cliffs of Latrabjarg

I was really looking forward to seeing and photographing puffins on my trip - I figured since half the worlds puffin population is in Iceland, I should see them everywere - turns out, I was done most of my trip and I didnt sight any puffins up close. So, Latrabjarg, the biggest bird cliff in the country seemed like the ideal opportunity - tourist materials describe the scale of the cliff and bird habitat as "unfathomable" - so it was a no-brainer making a long rough dirt road drive to this place - The view was incredible and I've never seen so many birds at a time, BUT unfathomably, no puffins!! What are the odds of this? Could not believe my luck...