Table 1: Tukey’s HSD pairwise comparisons for δ13C and δ15N values in mammals and birds. CKR = carbon whole body with keratin outer covering removed, CWB = carbon whole body with keratin outer covering included, CK = carbon keratin outer cover (hair/feather), NKR = nitrogen whole body with keratin outer covering removed, NWB = nitrogen whole body with keratin outer covering included, NK = nitrogen keratin outer cover hair/feather. Table 1: Tukey’s HSD pairwise comparisons for δ13C and δ15N values in mammals and birds. CKR = carbon whole body with keratin outer covering removed, CWB = carbon whole body with keratin outer covering included, CK = carbon keratin outer cover (hair/feather), NKR = nitrogen whole body with keratin outer covering removed, NWB = nitrogen whole body with keratin outer covering included, NK = nitrogen keratin outer cover hair/feather. Table 1: Tukey’s HSD pairwise comparisons for δ13C and δ15N values in mammals and birds. CKR = carbon whole body with keratin outer covering removed, CWB = carbon whole body with keratin outer covering included, CK = carbon keratin outer cover (hair/feather), NKR = nitrogen whole body with keratin outer covering removed, NWB = nitrogen whole body with keratin outer covering included, NK = nitrogen keratin outer cover hair/feather. Table 1: Tukey’s HSD pairwise comparisons for δ13C and δ15N values in mammals and birds. CKR = carbon whole body with keratin outer covering removed, CWB = carbon whole body with keratin outer covering included, CK = carbon keratin outer cover (hair/feather), NKR = nitrogen whole body with keratin outer covering removed, NWB = nitrogen whole body with keratin outer covering included, NK = nitrogen keratin outer cover hair/feather. Table 1: Tukey’s HSD pairwise comparisons for δ13C and δ15N values in mammals and birds. CKR = carbon whole body with keratin outer covering removed, CWB = carbon whole body with keratin outer covering included, CK = carbon keratin outer cover (hair/feather), NKR = nitrogen whole body with keratin outer covering removed, NWB = nitrogen whole body with keratin outer covering included, NK = nitrogen keratin outer cover hair/feather.
Test Class Offset Estimate SE p-value
CKR vs. CWB Mammal -0.02 0.08 0.94
CKR vs. CK Mammal -1.90 0.08 <0.001
CWB vs. CK Mammal -1.93 0.08 <0.001
CKR vs. CWB Bird 0.26 0.16 0.26
CKR vs. CK Bird -0.42 0.16 0.06
CWB vs. CK Bird -0.15 0.16 0.60
NKR vs. NWB Mammal -0.09 0.08 0.48
NKR vs. NK Mammal -0.06 0.08 0.70
NWB vs. NK Mammal -0.16 0.08 0.12
NKR vs. NWB Bird -0.03 0.05 0.76
NKR vs. NK Bird -0.35 0.05 <0.001
NWB vs. NK Bird -0.32 0.05 <0.001