Table 2. The mean difference between isotope ratios of muscle and hair or skin for three potential grizzly bear foods.

Delta values are the average difference compared to muscle. A single sample of coho eggs was compared to the mean coho muscle values because this sample was taken from a unique fish.

Species	Δδ13C	SD	Δ δ15N	SD	Δ δ34S	SD	n
Marmot muscle—hair	-3.0	0.9	-1.6	0.8	-2.4	0.5	2
Sockeye muscle—skin	0.5	1.7	0.3	0.5	0.0	0.4	6
Coho muscle—skin	-2.3	0.7	-1.0	1.3	0.6	0.5	4
Coho muscle—egg	-1.5		2.7			0.5	1