Retrieving "Nesting Burrow" from the archives

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1. North Atlantic Puffins

   Linked via "burrow site"

   Reproduction and Life Cycle
   Puffins form long-term pair bonds, typically returning to the same burrow site annually. Nests are excavated in grassy slopes or utilize natural crevices in rock faces. A single, pale blue egg is laid per season.
   Incubation lasts approximately 40 days, shared between both parents. The chick, known as a puffling, develops rapidly, [fledging](/en…