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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Horned Grebe (Podiceps auritus)


Colymbus auritus

Linnaeus, 1758, Europe and America; restricted to Vaasa, Finland.

Sometimes placed in genus Dytes, although actually closer to P. grisegena and P. cristatus than to other Podiceps. Has...

Descriptive notes: 31–38 cm; 300–470 g. Nominate race in breeding plumage Another close view An adult settling on nest has blackish cap, hindneck and upperparts; upperwing blackish brown to brown-grey, with large white panel over...
figure, drawing, illustration of Horned Grebe (Podiceps auritus)

Spectacled Owl (Pulsatrix perspicillata)


Strix perspicillata

Latham, 1790, Cayenne.

Form pulsatrix treated as a separate, monotypic species by some recent authors#R...

Descriptive notes: 43–52 cm; 550–980 g (nominate), 500–982 g (saturata), 1075–1250 g (pulsatrix). Large owl. Facial disc very dark brown, with prominent white eyebrows and lores; head and neck blackish-brown, rest of...
figure, drawing, illustration of Spectacled Owl (Pulsatrix perspicillata)

Asian Crested Ibis (Nipponia nippon)


Ibis nippon

Temminck, 1835, Japan.

Proposed race sinensis, described around end of 19th century, turned out to be the species’ breeding plumage. Monotypic.

Descriptive notes: 55–84 cm. Distinctive bushy-crested ibis with red facial skin and legs. Non-breeding adult white, with orangish-cinnamon tones in tail and flight feathers, whereas breeding adult has grey head, neck, mantle and...
figure, drawing, illustration of Asian Crested Ibis (Nipponia nippon)

Northern Marquesan Reed-warbler (Acrocephalus percernis)


Conopoderas percernis

Wetmore, 1919, Nuku Hiva, Marquesas, Polynesia.

Until recently considered conspecific with A. mendanae, but molecular analysis#R indicates that...

Descriptive notes: 18–22 cm. A large, bulky reed-warbler, bright yellow below, with greenish upperparts, medium-length, slightly curved bill, and yellow-tipped tail. Probably indistinguishable from allopatric A. mendanae in a field situation. Sexes similar....
figure, drawing, illustration of Northern Marquesan Reed-warbler (Acrocephalus percernis)

White Wagtail (Motacilla alba)


Motacilla alba

Linnaeus, 1758, Sweden.

Thought to be closely related to M. maderaspatensis, M. grandis and M. aguimp, all of which formerly often regarded as races of...

Descriptive notes: 16·5–18 cm; male 20–24·6g, female 17·6–21·9 g (to 27·9 g when laying). Male nominate race in breeding plumage has mid-crown to nape and hindneck black, chin and throat black, rest of...
figure, drawing, illustration of White Wagtail (Motacilla alba)