Foxes Have Been Eating Humans' Leftovers for 42,000 Years (IMAGE)
Caption
Summary figure for the commensal fox hypothesis. The blue area marks the impact of humans on dietary resources. For low δ15N foxes, humans had no influence, while for intermediate δ15N foxes they had a very strong influence (restricted diet). High δ15N foxes may be influenced (e.g. by scavenging at kill sites) or may be of natural origin (e.g. by scavenging from megafauna that died naturally).
Credit
Baumann et al, 2020 (PLOS ONE, CC BY 4.0)
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