Of Australia and Polynesia, nests in tree cavities
English: tree swallow, tree martin, Hirundo nigricans
tree_swallowEnglish
tree swallow, Hirundo nigricans, Iridoprocne bicolor, tree martin, white-bellied swallow
Noun
Bluish-green-and-white North American swallow, nests in tree cavities
English: white-bellied swallow, tree swallow, Iridoprocne bicolor