The nest is about 56 cm ( 22 in ) wide .
The nest is constructed out of dead marsh grasses and other indigenous plants , and formed into a mound along the vegetated coasts of lakes greater than 3.7 ha ( 9.1 acres ) .
The nest is about 56 cm ( 22 in ) wide and is constructed out of dead marsh grasses and other indigenous plants , and formed into a mound along the vegetated coasts of lakes greater than 3.7 ha ( 9.1 acres ) .