Aves |
Ciconiiformes |
Ardeidae
Environment: milieu / climate zone / пределы глубины / distribution range
экология
; пресноводный; солоноватоводный. Boreal
Northeast Pacific: Canada.
Length at first maturity / Size / Weight / Возраст
половая зрелость: Lm ?  range ? - ? cm Max length : 130 cm TL самец/пол неопределен; (ссылка 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
половая зрелость | размножение | нерест | Eggs | Fecundity | Larvae
Colonies in the Strait of Georgia have high rates of reproductive success (Ref. 95040).
Основная ссылка
ссылки | координатор | соавторы
Elliott, J.E., R.W. Butler, R.J. Norstrom and P.E. Whitehead. 1989. (ссылка 95040)
Статус Красного Списка МСОП
(ссылка 130435: Version 2024-2)
Статус СИТЕС (ссылка 108899)
Not Evaluated
CMS (ссылка 116361)
Not Evaluated
Угроза для людей
Harmless
Использование человеком
| FishSource |
инструменты
дополнительная информация
Population dynamicsростMax. ages / sizesLength-weight rel.Length-length rel.Размерный составMass conversionчисленность PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
ресурсы в Интернет
Estimates based on models
Fishing Vulnerability
Very high vulnerability (78 of 100).