📸 PhotoPhoto: Sun Jiao (Interaccoonale) · CC BY 4.0 · Wikimedia Commons Source
Long-billed Plover
Thinornis placidus (Long-billed Plover · Long-billed Plover)
Not Evaluated (NE) on the IUCN Red List yet.
🇰🇷 Class II endangered wildlife (Korea)
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its body length of about 21 cm is about 70% of the long side of an A4 sheet of paper (29.7 cm) (Comparison).
- 💡 Its body length of 18 cm is similar to the length of a pencil (about 17.5 cm) (Comparison).
Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.
📖 1. Overview
The Long-billed Plover is a small plover that breeds in Ussuri, northern China, and Japan and moves south in winter to Korea and southern China. Hong Kong Bird Watching Society accounts use its former scientific name Charadrius placidus and note that it is listed as Least Concern (LC) by the IUCN with a decreasing population.
🦴 2. Anatomy & Morphology
It is a small plover measuring 18–21 cm in body length.
🔍 3. Ecology & Behavior
It breeds in Ussuri, northern China, and Japan and winters in Korea and southern China. In Hong Kong, it visits rarely as a winter migrant from December to March.
🇰🇷 4. Connection to Korea
In Korea, it is a Class II endangered wildlife (Korea). The Hong Kong Bird Watching Society notes that it winters in Korea and southern China.
📚 Sources & References
- • 멸종위기 야생생물 Ⅱ급 — 국가생물종목록(국립생물자원관) ktsn 120000155046 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000155046
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • Korean protection status: Class II endangered wildlife (Korea)
- • doi.org — avilist.v2026
- • 국가생물종목록(국립생물자원관) ktsn 120000155046 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000155046
- • wikidata.org — Q531118
- • avifauna.hkbws.org.hk — 010600
- • Silhouette: PhyloPic — Rachel T Mason · CC0 1.0 (Congeneric silhouette — Thinornis cucullatus)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.