European storm petrel (Hydrobates pelagicus)
A small seabird; the name is usually written in katakana as is common for many bird species in Japanese.
The European storm petrel is a small seabird that breeds in the North Atlantic.
Katakana spelling is standard for this bird name; usually written in kana.
Kanji spelling is rare and mostly seen in older or specialized texts; it but marks the word is listed as usually written in kana.
Compound of 姫 (hime, 'princess; small and delicate') + 海燕 (umitsubame, 'storm petrel'). The exact derivation is uncertain, but the name likely refers to its small size compared to other petrels.