 The noisy miner has some of the largest group sizes of any communally breeding bird , with up to twenty males and one female attending a single brood . Only males help with a nest , and while many birds may be associated with a particular brood , some males devote all their time to a single nest , while others spread their helping efforts across five or six nests . Behavioural evidence and genetic testing indicate that helpers are male offspring of the breeding pair , or full siblings of the male parent . Males nearly always bring food to the nestling singly , and if several arrive at once one will pass food to a nestling while the others wait . The female leaves the nest quickly when a male bird arrives , and never takes food from one of the helpers . Communal feeding of the young increases after fledging , and the young beg for food with constant ' chip chip ' calls and gaping mouths . The female rarely feeds the young birds after they have fledged . 
 The noisy miner <a href='got' title='1'><mark>has</mark></a> some of the largest group sizes of any communally breeding bird , with up to twenty males and one female attending a single brood . Only males help with a nest , and while many birds may be associated with a particular brood , some males devote all their time to a single nest , while others spread their helping efforts across five or six nests . Behavioural evidence and genetic testing indicate that helpers are male offspring of the breeding pair , or full siblings of the male parent . Males nearly always bring food to the nestling singly , and if several arrive at once one will pass food to a nestling while the others wait . The female <a href='uninflect' title='2'><mark>leaves</mark></a> the nest quickly when a male bird <a href='uninflect' title='3'><mark>arrives</mark></a> , and <a href='None' title='4'><mark>never</mark></a> <a href='uninflect' title='5'><mark>takes</mark></a> <a href='negative_concord' title='6'><mark>food</mark></a> from one of the helpers . Communal feeding of the young increases after fledging , and the young beg for food with constant ' chip chip ' calls and gaping mouths . The female rarely <a href='uninflect' title='7'><mark>feeds</mark></a> the young birds after they <a href='been_done' title='8'><mark>have</mark></a> fledged . 
The noisy miner got some of da largest group sizes of any communally breeding bird , w up to twenty males and one female attending a single brood . Only males help with a nest , and while many birds may b associated with a particular brood , sum males devote all their time to a single nest , while others spread their helping efforts across five or six nests . Behavioural evidence and genetic testing indicate that helpers r male offspring of tdabreeding pair , or full siblings of thdaale parent . Males nearly always bring food to thedastling singly , and if several arrive at once one will pass food to a nestling while the others wait . The daale leave the nest quickly when a male bird arrive , and don't never take no food from one of the helpers . Communal feedin of the ydag increases after fledging , and the young beg for food with constant ' chip chip ' calls and gaping mouths . The fedae rarely feed the young birds after they done fledged .