Slightly smaller and more svelte than a Great Blue Heron, these are still large birds with impressive wingspans. They are common throughout Australia, with the exception of the most arid areas. The Great Egret … Wingspan: 140 – 170 cm. The elegant Great Egret is a dazzling sight in many a North American wetland. Due to their diet, this species controls fish and insect populations across a range of habitats. Habitat: Lakes, water ways, wetlands and agricultural areas. The Great Egret (Casmerodius albus / Ardea alba) is a large egret with a global distribution. It feeds on molluscs, amphibians, aquatic insects, small reptiles, crustaceans and occasionally other small animals, but fish make up the bulk of its diet. The Great Egret usually hunts in water, wading through the shallows, or standing motionless before stabbing at prey. The diet for the Great Egret includes frogs, fish, and small reptiles as well as small mammals. According to the All About Birds resource, a continental population of the Great Blue heron is around 83,000 breeding birds. It is also known as the Great White Egret, the American Egret, the Large Egret or Common Egret.Previously, it was also referred to as the Great White Heron, leading to confusion with the white morph (form) of the larger, closely related Great Blue Heron.. They hunt in classic heron fashion, standing immobile or wading through wetlands to capture fish with a deadly jab of their yellow bill. Great Egret Feeding. A tall, stately white wader of quiet waters. Age: Up to 22 years. They tend to eat in the shallow waters or along the dry habitat around the water. Ecological niche. They use their sharp bill to spear their prey and then they swallow it whole. The Great Egret usually feeds alone. Scientific name: Ardea alba. Common, especially in the south, it may wander far to the north in late summer. Distribution. In the case of great egrets in the Everglades, exposure to mercury is happening through fish, their main diet. Feeding and diet. Great Egrets occur throughout most of the world. Weight: 950 – 1050 g. Length: 85 – 102 cm. Overall, currently this species is classified as Least Concern (LC) and its numbers today are Increasing. Diet: Fish, amphibians and small mammals. Great Egrets can be seen alone or in small flocks, often with other egret species, and roost at night in groups.
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