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The least bittern is one of the smallest herons in the world, with perhaps only the dwarf bittern and the black-backed bittern averaging smaller in length. [10] It can measure from 28 to 36 cm (11 to 14 in) in length, and the wingspan ranges from 41 to 46 cm (16 to 18 in).
The smallest species is usually considered the dwarf bittern, which measures 25–30 cm (10–12 in) in length, although all the species in the genus Ixobrychus are small and many broadly overlap in size. The largest species of heron is the goliath heron, which stands up to 152 cm (60 in) tall. All herons can retract their necks by folding them ...
Zigzag heron: Zebrilus undulatus (Gmelin, JF, 1789) 7 Eurasian bittern: Botaurus stellaris (Linnaeus, 1758) 8 Australasian bittern: Botaurus poiciloptilus (Wagler, 1827) 9 American bittern: Botaurus lentiginosus (Rackett, 1813) 10 Pinnated bittern: Botaurus pinnatus (Wagler, 1829) 11 Stripe-backed bittern: Botaurus involucris (Vieillot, 1823 ...
The species have different underpart colours; white to grey or orange-buff in striated heron, and very dark grey in lava heron, and red-brown in green heron; in all, there is a line of white streaks running down the front of the throat and breast. The juveniles are browner above and extensively streaked below, and have greenish-yellow legs.
Pinnated bittern, Botaurus pinnatus (V) Least bittern, Ixobrychus exilis; Black-crowned night-heron, Nycticorax nycticorax; Yellow-crowned night-heron, Nyctanassa violacea; Green heron, Butorides virescens; Striated heron, Butorides striata (V) Cattle egret, Bubulcus ibis; Great blue heron, Ardea herodias; Great egret, Ardea alba
The yellow-crowned night heron is a rather stocky wading bird, ranging from 55 to 70 cm (1 ft 10 in – 2 ft 4 in) and from 650 to 850 g (1.43–1.87 lb), the females being a little smaller than the males. The yellow-crowned night heron has a wingspan ranging from 101 to 112 cm (3 ft 4 in – 3 ft 8 in). [10]
The striated heron (Butorides striata) also known as mangrove heron, little green heron or green-backed heron, is a small heron, about 44 cm tall.Striated herons are mostly sedentary and noted for some interesting behavioural traits.
Least bittern: Ixobrychus exilis: Trinidad only Stripe-backed bittern: Ixobrychus involucris: Trinidad only Black-crowned night-heron: Nycticorax nycticorax: Yellow-crowned night-heron: Nyctanassa violacea: Green heron: Butorides virescens virescens: Common Tobago, vagrant Trinidad Striated heron: Butorides striata: Trinidad only Squacco heron ...