Latest r ecord . --14 August 1974. 

 area "(Stewart and Robbins 1958). 



2 recorded on 14 October in the Maryland 



Wi nter r ecord . --1 seen from the Chesapeake Bay Bridae-Tunnel , Virginia on 

 10 January l?7TTScott and Cutler 1971). 



S pecimen re cords . --1 found alive on the beach at Assateague Island, 

 Worcester Co., Maryland, 16 August 1972 (USNM 566273); 1 found at night on the 

 deck of the R.V. "Advance 11", anchored 133 km E Rehoboth Beach (38°41'N, 

 73°34'W), Delaware, 11 Auoust 1975 (USNM 567713). 



Remarks, 

 duals. 



-All sightings of Leach's storm petrels were of single indivi- 



Unlike the Wilson's storm petrel they are not boat-followers. A 

 single Leach's, associated with a large feeding aggregation of Wilson's on 1 

 June 1975, remained on the periphery of the flock. 



E 

 o 



1000 



500- 



100- 



40- 



30 



20 i 



10 







X 

 X 

 X 



I I 



XXX 

 X X 

 X 



<.l 



1 1 1 1 1 1 \ 1 1 1 1 



JFMAMJJASOND 



month 



1=0.1-1.0 



MEAN NUMBER OF INDIVIDUALS OBSERVED PER HOUR 

 X = ZONE NOT SAMPLED IN THIS MONTH 



Figure 12. Seasonal abundance and seaward distribution patterns of the 

 Leach's storm petrels in the northern Chesapeake Pight, 1971- 



HARCOURT'S STORM PETREL (Oceanodroma castro) 



1977. 



Status. — Casual; waifs have been picked up after the passage of tropical 

 eastern North America, occurring most frequently from mid-summer 



storms in 

 through fall 



Specimen record. --The first confirmed record for the western North Atlan- 



tic was found on the deck of the R.V. 

 Beach (38°41'N, 73°34'W), Delaware, 

 not attributed to a tropical storm. 



"Advance II," anchored 133 km E Rehoboth 

 14 August 1975 (USNM 567714). This was 



19 



