| Puffin | Razorbill | ||
---|---|---|---|---|
Carbon | Nitrogen | Carbon | Nitrogen | |
Average feather isotope values (‰) | −15.76 | 13.55 | −16.47 | 16.77 |
Average pipefish isotope values in most likely foraging locations during feather moult (‰) | −18.22 | 9.88 | −18.12 | 9.96 |
Difference between pipefish isotope values and seabird isotope values (‰) | 2.46 | 3.67 | 1.65 | 6.81 |