Murres are sociable seabirds that live off northern coasts. They nest in tightly packed colonies on craggy seaside cliffs. The ledges on which murres lay their eggs can be quite narrow: sometimes as shallow as an egg is long.
Eggs are normally round and prone to roll if given the opportunity. Conicality is critical to an egg’s tendency to wander off under the influence of gravity when sitting on an uneven surface, such as a cliff ledge.
Unsurprisingly, the coherent force behind Nature saw fit to make murre eggs uniquely pointy. Otherwise, lacking eggs from which to hatch, murres would naturally be in short supply.