Bird Guide

Cocoi Heron vs White-necked Heron

Cocoi Heron (Ardea cocoi)

Cocoi Heron

Ardea cocoi

Huge1.8 kgWetland

The cocoi heron is the largest of the South American heron species and measures 95–130 cm (37.5–51 in) in length, although body sizes vary regionally; with southern individuals probably being the largest. Adult weight of both males and females can variously range from 1.14 to 3.2 kg (2.5 to 7 lb). In the adult, wing length has been recorded as 421–455 mm (16.5–18 in), tail length 161–173 mm (6.5–7 in), culmen from base 128.5–148.7 mm (5–6 in) and tarsus 179–192 mm (7–7.5 in).

ID text from Wikipedia, CC BY-SA 4.0

Photo: Irene · CC0
White-necked Heron (Ardea pacifica)

White-necked Heron

Ardea pacifica

Large881 gWetland

The white-necked heron is a large, diurnal, long-legged waterbird. It is mostly slate-grey to black with distinctive black spots in the centre of the lower fore-neck and throat. During the breeding season plum-coloured nuptial plumes are present on the back and breast. The flight is stately, with slow steady wing-beats. The length is 76–106 cm (30–42 in), wingspan 147–160 cm (58–63 in) and weight 860 g (30 oz). The bill is black and the facial skin is commonly blue or yellow. The eyes are green and the legs and feet black.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Wayne Butterworth · CC BY 3.0

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Photos and recordings are credited to their authors under the licence shown. Full profiles: Cocoi Heron and White-necked Heron.