The common tern is a seabird which is part of seabird diversity and biomass. Both biomass and diversity of seabirds has enhanced cross-ecosystem nutrients and subsidies as they transfer and concentrate nutrients from their feeding grounds in the ocean to island and coastal regions where they roost and breed.
Interestingly, the common tern drinks on the wing, and they can drink either saltwater or freshwater as they have nasal glands that excrete excess salt. To prevent their nest from flooding, they quickly add vegetation, bones, shell fragments, and anything else they can collect to raise their nest just like humans adding sandbags.
The creation of common tern was mainly made from recycled materials from household waste, including cardboard box, cardboard inserts/separators, and packing peanuts.