Species

HBW Alive provides full accounts for every bird species known to science up to June 2013, including distribution maps and color illustrations. Check out these recently updated species or search the species you want.

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Pallas's Sandgrouse (Syrrhaptes paradoxus)

Taxonomy:

Tetrao paradoxa

Pallas, 1773, southern Tartarian Desert.

Closely related to S. tibetanus. Monotypic.

Descriptive notes: 27–41 cm; male c. 250–300 g, female c. 200–260 g; wingspan 60–78 cm. Front toes feathered, hind toe lacking; long, pin-like central tail feathers; outermost primary longer and attenuated, particularly so in males...
figure, drawing, illustration of Pallas's Sandgrouse (Syrrhaptes paradoxus)

Black-and-chestnut Eagle (Spizaetus isidori)

Taxonomy:

Falco Isidori

Des Murs, 1845, Bogotá, Colombia.

Previously placed in monotypic genus Oroaetus, but recent phylogenetic study found this species to be nested among the New World Spizaetus...

Descriptive notes: 60–80 cm, wingspan 144–166 cm. Large, stocky eagle with relatively short tail but long wings. Head, crest, neck and upperparts black, below chestnut streaked with black; thighs black, feathered tarsi chestnut; tail...
figure, drawing, illustration of Black-and-chestnut Eagle (Spizaetus isidori)

Pacific Wren (Troglodytes pacificus)

Taxonomy:

Troglodytes hyemalis [sic] (var. pacificus

) S. F. Baird, 1864, Simiahmoo, Puget Sound, Washington.

Until recently considered conspecific with T. troglodytes and T. hiemalis, given great morphological consistency, but acoustic and...

Descriptive notes: 9–11 cm; 8–12 g. Small, dark wren with short tail, small bill and pale supercilium, chin and throat. Upperwing-coverts rufous-brown with darker barring; primaries and secondaries brown, barred darker; upper breast light wood...
figure, drawing, illustration of Pacific Wren (Troglodytes pacificus)

Imperial Woodpecker (Campephilus imperialis)

Taxonomy:

Picus imperialis

Gould, 1832, “California” = Jalisco, Mexico.

Closely related to C. principalis. Monotypic.

Descriptive notes: c. 56–60 cm. World’s largest woodpecker; huge, with pointed crest. Male has side of crown back to underside of crest and nape red, feathers with white bases; rest of head and neck, also upperparts, underparts and tail, black...
figure, drawing, illustration of Imperial Woodpecker (Campephilus imperialis)

Ross's Gull (Rhodostethia rosea)

Taxonomy:

Larus roseus

W. MacGillivray, 1824, Melville Peninsula, Canada.

Resembles Hydrocoloeus minutus in size and plumage sequence, but with very different adult plumage; morphometric analysis suggests that it is an...

Descriptive notes: 29–32 cm; 120–250 g; wingspan 82–92 cm. Two-year gull. Dove-like or tern-like, with a buoyant tern-like flight, and unique combination of wedge-shaped tail (not always apparent), grey underwing and black nuchal collar...
figure, drawing, illustration of Ross's Gull (Rhodostethia rosea)