 Noisy miners are gregarious and territorial ; they forage , bathe , roost , breed and defend territory communally , forming colonies that can contain several hundred birds . Each bird has an ' activity space ' and birds with overlapping activity spaces form associations called ' coteries ' , the most stable units within the colony . The birds also form temporary flocks called ' coalitions ' for specific activities such as mobbing a predator . Group cohesion is facilitated not only by vocalizations , but also through ritualised displays which have been categorised as flight displays , postural displays , and facial displays . The noisy miner is a notably aggressive bird , and chasing , pecking , fighting , scolding , and mobbing occur throughout the day , targeted at both intruders and colony members . 
 Noisy miners are gregarious and territorial ; they forage , bathe , roost , breed and defend territory communally , forming colonies <a href='null_relcl' title='1'><mark>that</mark></a>can contain several hundred birds . Each bird <a href='got' title='2'><mark>has</mark></a> an ' activity space ' and birds with overlapping activity spaces form associations called ' coteries ' , the most stable units within the colony . The birds also form temporary flocks called ' coalitions ' for specific activities such as mobbing a predator . Group cohesion is facilitated not only by vocalizations , but also through ritualised displays which <a href='been_done' title='3'><mark>have</mark></a> been categorised as flight displays , postural displays , and facial displays . The noisy miner <a href='drop_aux' title='4'><mark>is</mark></a>a notably aggressive bird , and chasing , pecking , fighting , scolding , and mobbing occur throughout the day , targeted at both intruders and colony members . 
Noisy miners r gregarious and territorial ; they forage , bathe , roost , breed and defend territory communally , forming colonies can contain several hundred birds . Each bird got an ' activity space ' and birds with overlapping activity spaces form associations called ' coteries ' , da most stable units within the colony . The birds also form temporary flocks called ' coalitions ' fa specific activities such as mobbing a predator . Group cohesion is facilitated not only by vocalizations , but also through ritualised displays which done been categorised as flight displays , postural displays , and facial displays . The noisy miner a notably aggressive bird , and chasing , pecking , fighting , scolding , and mobbing occur throughout the day , targeted at both intruders and colony members .