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Newell's shearwater or Hawaiian shearwater (ʻaʻo), (Puffinus newelli) is a seabird in the family Procellariidae. It belongs to a confusing group of shearwaters which are difficult to identify and whose classification is controversial.
ʻAʻo (Newell's shearwater, Puffinus newelli) is a medium-sized shearwater measuring 12–14 in (30–36 cm) with a wing span of 30–35 in (76–89 cm). It has a glossy black back and white belly and a black bill that is sharply hooked at the tip.
Calonectris is a genus of seabirds.The genus name comes from Ancient Greek kalos, "good" and nectris, "swimmer".. The genus comprises four large shearwaters.There are two other shearwater genera, Puffinus, which comprises 21 small to medium-sized shearwaters, and Ardenna with 7 larger species.
Puffinus is a genus of seabirds in the order Procellariiformes that contains about 20 small to medium-sized shearwaters.Two other shearwater genera are named: Calonectris, which comprises three or four large shearwaters, and Ardenna with another seven species (formerly often included within Puffinus).
Hutton's shearwater (Puffinus huttoni) breeds in burrows on the sea-facing mountainside of the Kaikoura Ranges on South Island, New Zealand. The colonies are 1,200–1,800 m (3,900–5,900 ft) above sea level at a distance of 12–18 km (7.5–11.2 mi) from the coast.
Many shearwaters are long-distance migrants, perhaps most spectacularly sooty shearwaters, which cover distances in excess of 14,000 km (8,700 mi) from their breeding colonies on the Falkland Islands (52°S 60°W) to as far as 70° north latitude in the North Atlantic Ocean off northern Norway, and around New Zealand to as far as 60° north latitude in the North Pacific Ocean off Alaska.
The harpy eagle is Panama's national bird. This is a list of the bird species recorded in Panama. The avifauna of Panama included a total of 1020 species as of July 2023, according to Bird Checklists of the World (Avibase). Three species have been added from other sources. Of the 1021 species, 125 are rare or accidental and six have been introduced by humans. Seven are endemic. An additional ...
Its relationships are unresolved. Its closest relatives are probably, but not certainly, the Hawaiian shearwater (Puffinus newelli) and possibly the Manx shearwater (Puffinus puffinus) (Austin, 1996; Austin et al., 2004). It formerly contained the former as a subspecies and was long considered a subspecies of the latter.