FAMILY HIRUNDINIDAE 



23 



California and a western montane race has been described by Behle 

 (Condor, 1968, p. 166) as Progne subis arboricola, with the type lo- 

 cality at "Payson Lakes, 8300 feet elevation, 12 miles southeast Payson, 

 Utah County, Utah." The assigned nesting range is from the Wasatch 

 and Pavant Mountains of Utah, south to Arizona from the Mogollon 

 Plateau to the Chiricahua Mountains. It is described as larger than 

 subis, with the female like hesperia in paler color. Wing measurements 

 of specimens that I have collected in northwestern Utah are as follows: 

 Males, 152.0-157.0 (154.7); females, 144.0-152.0 (148.0) mm. 



In fall migration, Paynter (Auk, 1953, p. 347) , at the end of August 

 and the beginning of September 1952, recorded Purple Martins in 

 small number in southward migration through the Caribbean islets on 

 the Campeche Bank north of the Yucatan Peninsula. Russell (A. O. 

 U. Orn. Mon., no. 1, 1964, p. 130) noted them as "regular transients" 

 through British Honduras in spring and fall. Monroe (A. O. U. Orn. 

 Mon. no. 7, 1968, p. 278) found them fairly common in spring and fall 

 on the Caribbean side of Honduras. From October 8 to 12, he recorded 

 several males in the Choluteca-Namasigiie region of the Pacific Coast. 

 Martins are passage migrants spring and fall through Panama, but as 

 yet in detail are relatively little known. 



The first two subspecies are recorded in Panama from specimens. 

 The third may be found also among the migrants, since Purple Martins 

 as a species pass the period of northern winter in Brazil. 



Dr. Eugene Eisenmann has furnished the following summary of 

 occurrence in Panama from his personal observations and those of 

 other observers sent him. The records are based partly on female and 

 immature individuals, which in life differ from the resident Gray- 

 breasted Martin (Progne chalybea chalybea) in larger size, and in 

 pale area on the side of the neck and often on the forehead. In the 

 Caribbean area of the Isthmus, in southward flight this martin has 

 been recorded both in small groups and in flocks of 40 to 5000 birds, 

 from August 3 to September 15, at Almirante, Bocas del Toro (N. G. 

 Smith), near Coco Solo, Coco Solito, and Gatun Lake near Gamboa, 

 August 5 and September 21 (E. S. Morton), Barro Colorado Island 

 (Willis), Gatun Dam, Canal Zone; Puerto Pilon, Colon (Ambrose). 

 Reports from the Pacific slope are few: Anton and Penomome, Code, 

 September 18 (H. Loftin, E. Tyson), between Tocuman and Plata- 

 nales, eastern Province of Panama, September 10 ( Pujals et al.) , south- 

 western Canal Zone, one September 12 (R. Ryan). 



The spring migration northward is little known. At Almirante, 

 Bocas del Toro, on February 18, 1958, during a steady rain, between 



