TABLE 2.

Seasonal variations of concentrations of FC in gull and goose feces over 2 years^a

Source of feces	Time of sampling		No. of droppingsb	Avg FC concn (CFU/g)c
	Season	Yr
Ring-billed gull	Autumn	1995	29	6.86 × 108
		1996	25	5.84 × 107
	Winter	1996	33	1.90 × 108
		1997	29	1.52 × 109
	Spring	1996	39	1.12 × 108
		1997	30	2.66 × 108
	Summer	1996	39	1.04 × 108
		1997	25	1.42 × 108
Canada goose	Autumn	1995	25	1.53 × 104
		1996	29	8.76 × 104
	Winter	1996	40	2.42 × 107
		1997	23	4.50 × 103
	Spring	1996	21	1.70 × 105
		1997	33	1.75 × 104
	Summer	1996	40	3.00 × 105
		1997	25	6.00 × 106

^aFecal samples were collected in Westchester County, N.Y. 

^bThere was a total of 249 ring-billed gull droppings and 236 Canada goose droppings. 

^cOverall FC concentrations were 3.68 × 10⁸ CFU/g for ring-billed gull droppings and 1.53 × 10⁴ CFU/g for Canada goose droppings.