EARLY BIRD EXCEPTION -- This is a weaker form of the Larry Bird exception, and is also a component of the Veteran Free Agent exception. Players who qualify for this exception are called "Early Qualifying Veteran Free Agents" in the CBA. A player qualifies for this exception essentially by playing two seasons without being waived or changing teams as a free agent (see question number 26 for details). A team may use this exception to re-sign its own free agent for up to 175% of his salary the previous season or the average player salary, whichever is greater (see question number 25 for the definition of "average salary." Also note that for 2005-06 they used a defined figure of $5 million). Early Bird contracts at least two seasons in length (which limits this exception's usefulness -- it's often better to take a lower salary for one more season and then have the full Bird exception available the next season) and no longer than five seasons. A player can receive raises up to 10.5% of the salary in the first season of the contract using this exception.
If the player was a first round draft pick and just completed the second year of his rookie scale contract, but his team did not exercise their option to extend the contract for the third season (see question number 42), then this exception cannot be used to give him a salary greater than he would have received had the team exercised their third year option. In other words, teams can't decline the option in order to get around the salary scale and give the player more money.
If the player is a restricted free agent with two years of service and receives an offer sheet from a new team, the player's prior team may use the Early Bird exception to match the offer sheet (see question number 37 for restricted free agency).
Starting January 10 of each season, this exception begins to reduce in value. See question number 20 for details.
NON-BIRD EXCEPTION -- This is also a component of the Veteran Free Agent exception. Its name is somewhat of a misnomer, since Non-Bird really is a form of Bird rights. Players who qualify for this exception are called "Non-Qualifying Veteran Free Agents" in the CBA. They are veteran free agents who are neither Qualifying Veteran Free Agents nor Early Qualifying Veteran Free Agents, either because they haven't met the criteria, or because they are Early Bird free agents following the second season of their rookie scale contract and whose team renounced the Early-Bird exception. This exception allows a team to re-sign its own free agent to a salary starting at up to 120% of the player's salary in the previous season, 120% of the minimum salary, or the amount needed to tender a qualifying offer (if the player is a restricted free agent -- see question number 37), whichever is greater. Raises are limited to 8% of the salary in the first year of the contract, and contracts are limited to five seasons when this exception is used.
A partial season counts as a full season for the tenure calculation related to Bird rights. If a team signs another team's free agent to a rest-of-season contract mid-way through the season, then at the end of that season the player is a non-Bird free agent.