Saturday, 1 March 2014

Brolga

The Brolga is a tall and slender bird , with very long legs which are mainly gray and slender neck ( gray) are topped with a bare head and a red patch of skin behind the eyes scurrying back of the head Adult feather ( feathers ) also grey.They grows to about 1 meter by 2 meter wingspan . Because Brolgas often nest and live in brackish water they are the only crane species to have a gland in the corner of their eye that helps to pass the excessive salt.


Brolgas typically found in large noisy flock (sometimes 1,000 or more ) in a herd Each family group led by a man . When the rainy season ends they may have to fly long distances to find food . Brolgas can search for cold air to fly to high altitudes . The Brolga is found mostly in the tropical north or in the east of Australia is difficult to estimate the numbers in Australia , but is said to range between 20,000 and 100,000 conegrate They prefer freshwater marsh meadow , but can survive in marginal brackish and salty wetlands.
 
 

Brolgas have a varied diet but love grass tubers ( small , swelling of starch in the roots of wetland plants ) They also like crops of grain , seeds , insects ( invertebrates ) , and a variety of small vertebrates such as frogs and small reptiles are what most brolgas famous , their mating dance with wings spread and facing each other 2 brolgas jumping , dancing , round , prancing about and doing too much head shaking at the same time they often make a loud trumpet call this dance very delicate looking and graceful.


Brolgas are gregarious creatures; the basic social unit is a pair or small family group of about three or four birds, usually parents together with juvenile offspring, though some of such groups are unrelated. In the non-breeding season, they gather into large flocks, which appear to be many self-contained individual groups rather than a single social unit.


Within the flock, families tend to remain separate and to coordinate their activities with one another rather than with the flock as a whole. When taking off from the ground the flight is ungainly, with much flapping of wings. The bird's black wingtips are visible while it is in the air and once it gathers speed, its flight is much more graceful and it often ascends to great heights. Here it may be barely discernible as it wheels in great circles, sometimes emitting its hoarse cry.

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