- · Grid units represent actual meters (m); human and animals are drawn to the exact same scale with original silhouette aspect ratios preserved.
- · When a size range is recorded (e.g. 1–1.6m), the lower bound is used for scale comparison.
- · Bird-like Noctule silhouette: PhyloPic — Andy Wilson · CC0 1.0 (Nyctalus noctula)
- · Human silhouette: PhyloPic — NASA · Public Domain Mark 1.0
Bird-like Noctule
Nyctalus aviator (Bird-like Noctule · ヤマコウモリ)
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 It catches more than 20 g of insects in a single night, which is heavier than four Korean 100-won coins (about 5.4 g each) (Comparison).
- 💡 A maximum head-body length of 9.5 cm is slightly longer than the long side of a credit card (about 8.6 cm) (Comparison).
- 💡 It has been recorded at several sites across Korea, including Seoul, Busan, and Seoraksan.
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 Bird-like Noctule is a large bat measuring 71–95 mm in head-body length that roosts in colonies inside large tree hollows.
🦴 2. Anatomy & Morphology
Its ears are short, rounded, and broad, with a short mushroom-shaped tragus, and its skull is sturdy and wide.
🔍 3. Ecology & Behavior
Just before sunset it flies fast and high in the sky to catch moths, flies, and beetles, sometimes eating more than half its body weight in insects in a single night. Females usually give birth to 2 young in early summer, young become independent in mid- to late August, and its lifespan is at least 6 years.
🇰🇷 4. Connection to Korea
In the National List of Species of Korea, its domestic range covers the entire country except islands, with records from Seoul, Busan, Seoraksan in Gangwon-do, and Haman in Gyeongsangnam-do.
📚 Sources & References
- • IUCN Red List NT (2019) — https://www.iucnredlist.org/species/14921/22016483
- • IUCN Red List category NT — latest assessment at iucnredlist.org
- • mammaldiversity.org — 1005601
- • iucnredlist.org — 22016483
- • 국가생물종목록(국립생물자원관) ktsn 120000053266 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000053266
- • wikidata.org — Q134338
- • species.nibr.go.kr — mainHome.do
- • Silhouette: PhyloPic — Andy Wilson · CC0 1.0 (Congeneric silhouette — Nyctalus noctula)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.