Can everyone who likes to use abbreviations just refer to birds by  
full name in subject lines or the first time bird is mentioned, then  
use the abbreviation thereafter? This will keep confusion to a minimum  
and help the less experienced among us all learn the abbrvs too.

Example:

Subject: Red-winged Blackbird

Saw two male RWBL at my feeder this morning, as well as one Purple  
Finch (PUFI).  The PUFI looked like it might have finch-eye disease.