Evidence item

An independent subadult-focused sample reports 36% second-generation anticoagulant exposure and persistence five years after the California ban, indicating ongoing contamination despite restrictions. DIRECT_TEXT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 25875

Source: Using fine-scale aging in Barred Owls to understand timeline of rodenticide exposure in northwestern California · locator {} · excerpt hash sha256:e72c6c4d8eef386301592cf9df9705560182155a8faa710be8454a9e2289ad19

Exact excerpt

Liver samples collected from hundreds (n = 765) of Barred Owls reveal that nearly half (46%) show evidence of rodenticide exposure—mostly anticoagulant rodenticides (ARs), including 36% with second-generation ARs banned for use in California since 2020. These results highlight the ongoing contamination risk ... The age-exposure relationship supports prey-based accumulation rather than natal transfer, indicating that banned ARs persist in local food webs 5 years post-regulatory ban.

Linked claims

Claim	Direction	Relevance	Steps	Counted
8b5c9718	CONTRADICT	MODERATE	0	yes

Audits

None.