Aves |
Ciconiiformes |
Ardeidae
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
Others; air tawar; payau. Boreal
Northeast Pacific: Canada.
Panjang pada saat jatuh tempo pertama / Ukuran / Berat / umur
Kematangan: Lm ? range ? - ? cm Max length : 130 cm TL jantan/; (Acuan 94965)
Eagle-sized wingspan; grey-blue plumage; long, dagger-like yellow-bill; red thighs (Ref. 94965).
Dependent on healthy, uncontaminated coastal wetlands and estuaries for feeding. Wades in shallow water whilst foraging. Forms colonies. Piscivorous. In Florida Bay, natural feeding supplemented by "panhandling" association with humans where they feed on bait fish from locals and developed begging behavior from residents. In Stanley Park Zoo in Vancouver, British Columbia, a large colony is able to persist in close proximity to human activities for over 78 years. In Florida Bay, population decline of 30-40% due to hurricanes were linked to nesting and foraging habitat degradation (Ref. 87784).
Colonies in the Strait of Georgia have high rates of reproductive success (Ref. 95040).
rujukan utama
Acuan | Koordinator | mitra
Elliott, J.E., R.W. Butler, R.J. Norstrom and P.E. Whitehead 1989 Environmental contaminants and reproductive success of great blue herons Ardea herodias in British Columbia 1986-87. Environmental Pollution 59:91-114. (Acuan 95040)
Status IUCN Red List
(Acuan 130435: Version 2025-2 (Global))
status CITES (Acuan 108899)
Not Evaluated
Not Evaluated
ancaman kepada manusia
Harmless
penggunaan manusia
FAO - Publication: search | FishSource |
Alat, peralatan
informasi lanjut
Dinamika populasiPertumbuhanMaks. usia / ukuranPanjang-berat rel.Panjang-panjang rel.ukuran frekuensiKonversi massaKelimpahan FisiologiKonsumsi oksigen
Yang berhubungan dengan manusiaPerangko, koin, dll.
Sumber internet
Estimasi berdasarkan model
Kerentanan Penangkapan Ikan
(Acuan 71543) |
Very high vulnerability (78 of 100). |
