- Procellariiformes
- Procellariidae
Schwarzflügel-Sturmvogel Pterodroma nigripennis
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A small petrel with relatively long, broad wings. The underwings appear darker than in most other small petrels because of the wide black margin around the edges of the wings and a broad black diagonal bar on the inner wing. Migrates through Hawaiian waters, usually from spring through fall. Regularly seen offshore from boats, occasionally from shore.