The great crested
The great crested grebe is a bird species from the grebe family. This bird, which is about the size of a mallard, is the largest, most common and best known representative of this family of water birds. It breeds on freshwater lakes and larger ponds with reed-covered banks. Its courtship behaviour is particularly striking, which takes place in open water and is easy to observe. The courtship display elements include a violent shaking of the head with the feather bonnet spread apart and the so-called penguin pose, in which the birds lift themselves out of the water almost vertically in front of each other by rapidly paddling their feet.
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