Table 1.

Metal levels (ppb, dry weight) (ng/g) in feathers and eggs of glaucous-winged gulls collected from the Aleutian Islands

	Feathers		Eggs
	Adults	Chicks		X2(p)
	n=63	n=36	n=21
Arsenic	144±26.7	140±23.9	126±25.6	0.8 (NS)
	15.7	31.9	47.8
	(B)	(A,B)	(A)
Cadmium	77.3±12.1	33.7±5.2	84.1±18.6	13.2 (0.001)
	50.5	24.4	10.6
	(A)	(A,B)	(B)
Chromium	829±190	602±98.8	248±25.4	5.3 (0.07)
	383	328	226
	(A)	(A)	(A)
Lead	855±133	270±85.3	107±29.4	43.1 (<0.0001)
	444	27.4	0.9
	(A)	(B)	(C)
Manganese	1430±255	2200±482	1080±104	4.4 (NS)
	766	1280	950
	(A)	(A)	(A)
Mercury	3680± 374	1980±180	703±70.8	30.1 (<0.0001)
	2370	1680	631
	(A)	(A)	(B)
Selenium	996±53.5	1290±69.7	1570±91.1	24.1 (<0.0001)
	848	1210	1520
	(B)	(A)	(A)

Given are arithmetic means±SE (geometric means below) with Kruskal–Wallis Chi Square values and p values. Duncan values are given in parenthesis