North American Birds Egos. 53 



105.1 Kaeding Petrel. Orcd iKulnniid lc:i di ikjI . 



This bird is similar to Leach Petrel, hut is smaller and the tail is less deeply 

 forked. Its range is from ('alifornia to I'anama hret^din^ on the Revillagigedo 

 Islands off Mexico. 



106. Leach Petrel. Ocranndrnma Irvcorrhoa. 



Range.— North Atlantic and North I'acitic Oceans, bieeding from Maine and 

 from the Farallones, northward to Greenland and the Aleutians. 



These are the most common of the Petrels fountl on our coast: they are eight 

 inches in length, of a sooty brown color, and have a white rum)). The forked 

 tail will at (»iice distinguish them from any of the Atlantic Petrels. They nest in 

 burrows in the ground, laying a pure white egg, sometimes with a very faint 

 dusty wreath about the larger end. Size 1.20 x .1)5. These birds generally take 



turns in the task of incubation, one remaining atsea 

 ^- during the day and returning at night while his 



mate takes her turn roving the briny deep in search 

 of footl. The young are fed by regurgitation upon 

 an oily Huid which has a very offensive odor. This .^ 



odor is always noticeable about an island inhabit- V^-^_ 

 ateil by Petrels and is always retained by the eggs '^ - 

 or skins of these birds. They are very rarely seen -li i 

 dying in the vicinity of their nesting island during {f»^ 

 the day ; the bird that is on the nest will remain 

 [White] until removed by hand. Data.— Pumpkin Is., 



Maine, June 22, 1893. Single egg; nest of a few 

 grasses at the end of a burrow dug in the baik. 

 Collector, J. Lefavour. 



106.1 Guadalupe Petrel. Ocomodroiiui iDacroddctijIa. 



This species, which is very similar to the preced- _,-«^-^- 



ing, except for a longer and more deeply forked .-^T'' '^^ 



tail, breeds on Guadalupe Is. Their eggs are white j',y<-^"^.: -^^L. 



very minutely wreathed with reddish brown; they ^■''- -' ^^>' ^^l^^ 



are, however, nearly always nest stained to an uneven "•' '-^i^l^^ 



brownish color. Data.— Guadalupe Is., Lower .j^^fiB^B 



California, March 24, 1897. Single egg laid on a few a^^^F 



oak leaves and pine needles at the end of a three foot ...-■.,. .^^^^^ r 



burrow. Size of egg 1.40 x 1.00. Collector, A. W. '^^^K^KK^^^ 

 Anthony, 



[W hite. nt'st stained. I 



107. Black Petrel. Oi-fdiuxlninui nuiaiiid. 



Kange. — South Pacific, from southern California southward, breeding on the 

 small islands on both coasts of Lower California. They are similar to the Leach 

 Petrel except that the rump is blackish. Data. — San Benito Is,, Lower Califor- 

 nia, July 2.'i, 1S06. White egg laid on bare ground at the end of three foot bur- 

 row, size 1.40 x 1. Collector, A. W. Anthony. 



^;; 



