Movie S2.
Puffin taking a feather inside its burrow to line its nest (Grimsey Island, Iceland).
Evidence of tool use in a seabird
PNAS. 2019. 117:1277-1279 DOI: 10.1073/pnas.1918060117
Puffin taking a feather inside its burrow to line its nest (Grimsey Island, Iceland).
PNAS. 2019. 117:1277-1279 DOI: 10.1073/pnas.1918060117