month 



I =0.1-1.0 I =1.1-10 ■ =11-50 IB =51-130 



MEAN NUMBER OF INDIVIDUALS OBSERVED PER HOUR 

 X = ZONE NOT SAMPLED IN THIS MONTH 



Figure 13. Seasonal abundance and seaward distribution patterns of the 



Wilson's storm petrel in the northern Chesapeake Bight, 1571-1977. 



GANNET (Morus bassanus ) 



Status . --Common fall and spring transient and winter visitant from Octo- 

 ber to early May over the entire Continental Shelf (Fig. 14). 



Earliest record . --19 October 1974; however, sightings from shore were 

 recorded in mid-September. 



Latest record . --15 May 1978; however, sightings from shore were recorded 

 in late May. 



Extraseasonal records .--! sub-adult 61 km E Fenwick Island (38°3rN, 

 74°20'W), Delaware, 12 August 1974. 



Maximum counts. --FALL: 1,480 (1,160 ad, 320 imm) in 8 h, 10111 km E 

 Ocean City, 3 December 1977. Several hundred were gathered around fishing 

 vessels at 38°06'N, 74°17'W and at 38°07'N, 74°14'W. WINTER: 301 (300 ad and 

 1 imm) in 6 h, 37-65 km offshore, 8 February 1975; 306 (275 ad and 31 imm) in 

 7 h, 20-125 km ENE Ocean City, 1 February 1976; 253 (158 ad and 95 imm) in 7 

 h, 25-115 km ESE Ocean City, 7 March 1976. SPRING: 232 (62 ad and 170 imm) 

 in 11 h, 2-113 km ESE Ocean City, 11 April 1976; 290 (79 ad and 211 imm) in 11 

 h, 10-90 km ESE Ocean City, 27 April 1974; 140 (20 ad and 120 imm) in 6 h, 

 15-60 km ENE Ocean City, 27 April 1975. 



Remarks . --During the fall (October to early December) and spring (April 

 to mid-May) migrations, most gannets were seen inshore of the 30 fathom 



21 



