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Bowerbirds /ËbaÊÉrbÉrd/ make up the bird family Ptilonorhynchidae. They are renowned for their unique courtship behaviour, where males build a structure and decorate it with sticks and brightly coloured objects in an attempt to attract a mate.The family has 20 species in eight genera.he Ailuroedus catbirds are monogamous, with males raising chicks with their partner, but all other bowerbirds are polygynous, with the female building the nest and raising the young alone. These latter species are commonly dimorphic, with the female being more drab in color.
Things to know about a mallard nest. 1  The nest bowl is 7-8 inches in diameter and 1-2 inches deep. 2  Once the nest is built, egg laying will begin from 1-3 days. 3  Nest cover can be any form of vegetation available within the area. 4  Preferably dense vegetation 24 inches high, such as native grasslands and CRP fields. Artificial structures such as tires, washtubs, and boat docks will attract a goose searching for a nest. 2  Generally, the goose will sit on the nest and the gander will stand guard nearby. 3  They will lay a range of 4-8 eggs per clutch and the eggs will hatch within 25-30 days.