Aves |
Ciconiiformes |
Ardeidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
; Nước ngọt; Thuộc về nước lợ. Boreal
Northeast Pacific: Canada.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ?  range ? - ? cm Max length : 130 cm TL con đực/không giới tính; (Tài liệu tham khảo 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).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | Larvae
Colonies in the Strait of Georgia have high rates of reproductive success (Ref. 95040).
Elliott, J.E., R.W. Butler, R.J. Norstrom and P.E. Whitehead. 1989. (Tài liệu tham khảo 95040)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2024-2)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Các công cụ
Thêm thông tin
Population dynamicsSự sinh trưởngMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionSự phong phú PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models
Fishing Vulnerability
Very high vulnerability (78 of 100).