Assigning code names to bird species sounds like a good idea. Code names are a sort of short hand that can save space in field and lab notebooks, and facilitate using computers to analyze data.
To be helpful, codes names should be easy to remember and unique for each species being considered. For example, a field researcher working in North America doesn’t need distinct codes for penguins. But a lab researcher in North America might need distinct codes for penguins.
Of course, there is more than one way to assign a code name for a bird species. Here are some of the code names that have been assigned to the California condor.