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In Nova Scotia and New England, adult herons of both sexes averaged 2.23 kg (4.9 lb), [12] while in Oregon, both sexes averaged 2.09 kg (4.6 lb) [13] Thus, great blue herons are roughly twice as heavy as great egrets (Ardea alba), although only slightly taller than them, but they weigh only about half as much as a large goliath heron.
Nankeen night heron: Nycticorax caledonicus (Gmelin, JF, 1789) 29 Malayan night heron: Gorsachius melanolophus (Raffles, 1822) 30 Japanese night heron: Gorsachius goisagi (Temminck, 1836) 31 Capped heron: Pilherodius pileatus (Boddaert, 1783) 32 Whistling heron: Syrigma sibilatrix (Temminck, 1824) 33 Little blue heron: Egretta caerulea ...
The northern mockingbird is the state bird of Florida. ... Anas zonorhyncha (A) [12] American black duck, Anas ... Great blue heron, Ardea herodias; Gray heron, Ardea ...
The wings are broad and long, exhibiting 10 or 11 primary feathers (the boat-billed heron has only nine), 15–20 secondaries, and 12 rectrices (10 in the bitterns). The feathers of the herons are soft and the plumage is usually blue, black, brown, grey, or white, and can often be strikingly complex.
The tricolored heron is more solitary when foraging than other North American herons. When it forages for its prey, it is typically belly-deep in water, alone or at the edge of a mixed flock . [ 3 ] [ 4 ] Kent (1986) found that the diets of tricolored herons in Florida consisted of 99.7% fish and prawns. [ 8 ]
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The reddish egret (Egretta rufescens) is a medium-sized heron that is a resident breeder in Central America, the Bahamas, the Caribbean, the Gulf Coast of the United States (primarily Texas), and Mexico. The egret is known for its unusual foraging behavior compared to other herons as well as its association with mud flats, its habitat of choice.
The distinction between a heron and an egret is rather vague, and depends more on appearance than biology. The word "egret" comes from the French word aigrette that means both "silver heron" and "brush", referring to the long, filamentous feathers that seem to cascade down an egret's back during the breeding season (also called "egrets").