Thick-billed Murre Overview, All About Birds, Cornell Lab of Ornithology

The Thick-billed Murre is one of the deepest underwater divers of all birds, regularly descending to depths of more than 100 m, and occasionally below 200 m. It can remain submerged for more than three minutes.

The Thick-billed Murre does not build a nest, but incubating birds often shift pebbles or other debris, sometimes dropping them close to the site. When cemented by feces, these fragments may help to keep the egg from rolling off ledge if it is dislodged.

The oldest recorded Thick-billed Murre was at least 28 years, 8 months old when it was shot in eastern Canada in 2009. It had been banded in Nunavut in 1982.