14 



NORTH AMERICAN FAUNA 76 



Species Accounts 



We summarize records of 185 species of birds seen between 1952 

 and 1988. Eighteen (10%) of these species were not observed by us and 

 were neither photographed nor collected. Since few long-term studies 

 have been conducted in the area and the region is largely uninhabited, we 

 have included all observations of birds provided to us by trained observers. 

 Many of these species are distinctive with little possibility of misidentifi- 

 cation, and some are common in adjacent areas. With few exceptions, we 

 believe that with additional studies in our area many species will prove to 

 be more common and widespread than we report here. 



Relative abundance and seasonal occurrence follow Salter et al. 

 (1980), with modifications. Relative abundance is denoted as follows: 



abundant (A): observed each year, preferred habitat(s) widespread; 

 occurred throughout preferred habitat(s), during migration in consis- 

 tently high numbers, or both. 



common (C): same as abundant, but in moderate numbers. 



fairly common (FC): same as abundant, but in low to variable numbers. 



uncommon (U): usually observed each year, but occurred in low 

 numbers or in restricted habitats. 



rare (R): not observed each year; observations sporadic; no more than 

 a few locality records in any year. 



very rare (VR): fewer than five records during the study. 



Seasonal occurrence is denoted as follows: 



permanent resident (pr): individuals present all year. 



summer resident (sr): present only seasonally, in summer; nests, eggs, 



or nonvolant young reported, 

 winter resident (wr): present only seasonally, in winter, 

 spring or fall migrant (spm, fm): present only during migration, or 



primarily during migration periods, 

 visitant (v): includes but is not limited to molting, nonbreeding, failed 



breeding, and postbreeding individuals, as well as individuals out of 



their normal range. 



Indirect evidence of breeding was noted as sr? In these cases, 

 "possible" and "probable" breeding are as defined by Sharrock (1976). 

 Possible breeding birds were those found in appropriate nesting habitat 

 in summer but for which no indication of nesting was noted. Indications 

 of probable breeding included singing males or breeding calls heard; 

 territorial males or pairs; courtship or other displays indicative of nests 

 or young; brood patches on females; or nest-building activities. 



