T (Threatened) - A taxon that is represented in only a limited part of 

 what was once its total range, with reduced populations due to habitat 

 destruction or poor State or Federal management. 



R (Rare) - Those species or subspecies that are considered rare through- 

 out the State or are found in environmental conditions disjunct from the 

 normal geographic range of the species. 



PER (Peripheral) - Those species or subspecies that reach the edge of 

 their range in a State. 



EXTIR (Extirpated) - Those taxa that have become extirpated in a State, 

 for which there have been no verified specimens observed or collected 

 for 25 years. 



AOU American Ornithologists' Union. 1975. Report of the American Ornithol- 

 ogists' Union Committee on Conservation. Auk 92(4, suppl .) : 1B-16B . 



Categories assigned here on the basis of narrative provided in the AOU 

 list. 



AB Arbib, Robert. 1976. The Blue List for 1977. American Birds 30 (6): 

 1031-1039. 



BL (Blue List) - Those species which for any reason are now or seem to 

 be substantially reduced in numbers either regionally or throughout 

 their range. 



