Dendroica cerulea (Cerulean Warbler)

Illustration of Dendroica discolor (Prairie Warbler)

Illustration of Dendroica petechia (Yellow Warbler)

Illustration of Heliopora coerulea (Blue Coral), which is so named as the skeleton is blue. It is classified as Vulnerable by the IUCN due to overharvesting for the aquarium industry

Illustration of Litoria caerulea (Australian Green Tree Frog) adult

Sterna spp. (Tern)

adult warbler

Illustration of Protonotaria citrea (Prothonotary Warbler)

Illustration of Oporonis formosus (Kentucky Warbler)