He is a NSW Country, New South Wales State of Origin, Prime Minister's XIII and Indigenous All Stars representative.

In 2001, while playing for Rutherford Technology High School, Bird was selected for the Australian Schoolboys team and captained the side.

In 2004, Bird obtained notoriety after kneeing South Sydney Rabbitohs wing Shane Marteene in the head during their round 4 clash, which resulted in him being sent off by the referee and being suspended from playing for 10 weeks.

[7] According to his agent, Gavin Orr, Bird had "said he copped a couple of blows to the face during the match and he got an elbow from Shane Marteene in the tackle and just lost it.

"[8] Chief executive of the Cronulla-Sutherland Sharks, Steve Rogers, claimed that Bird had "been made an example of" and was angered that there "wasn't much consideration given to Greg's youth and his previous record".

[7] The judiciary stated that it took Bird's remorse and good record into account, but decided upon the lengthy suspension due to the severity of the offence.

[9] After the game Bird apologised to Marteene in the dressing rooms and also wrote letters to the player and the South Sydney Rabbitohs club.

[7] In 2006, Bird posed for the Naked Rugby League 2007-08 charity calendar, which was produced to raise money for the National Breast Cancer Foundation of Australia.

In June 2007, Bird was selected for the New South Wales side to play Queensland in game 2 of the 2007 State of Origin series.

In May 2008, Bird was selected for Australia in 2008 centenary test, retaining his five-eighth jersey in place of the injured Darren Lockyer.

Bird was also selected for game 1 of the 2008 State of Origin series for New South Wales, controversially chosen again in the five-eighth position.

On 25 August 2008, Bird appeared in the Sutherland Local Court charged with maliciously inflicting grievous bodily harm on his 24-year-old American girlfriend, Katie Milligan, at his flat in Cronulla.

The Cronulla-Sutherland Sharks chief executive, Tony Zappia, advised Bird that he would be stood down from the playing roster pending further investigation.

[17] The charges against Bird led to the British Government denying him a work permit to take up a playing position with Bradford Bulls.

[28] On 7 December 2009, Bird signed a one-year contract with the Gold Coast Titans, starting in 2010, returning to the National Rugby League after being cleared of his glassing conviction.

Bird made a total of 19 appearances for the Gold Coast as they finished bottom of the table and claimed the Wooden Spoon.