| Sumario: | Table S1. Number of individuals sampled according to species, age and sex. Table S2. Capture systems used for sampling each species included in our active monitoring study to assess avian scavenger exposure to anticoagulant rodenticides in NE Spain. Table S3. MS/MS dMRM transition parameters, recovery and limits of quantification (LOQ) for the analysed SGARs and the internal standard (IS). Table S4. Prevalence (%) and concentrations (ng mL-1)1 of the ΣSGARs concentration > LOQ (i.e., considering only individuals with SGAR levels > LOQ) in the blood of free-living obligate and facultative avian scavengers from the northwest Iberian Peninsula according to age class (nestling, juvenile, subadult and adult). Fig. S1. Percentage of birds containing residues of more than one SGARs in the blood. Regarding SGAR-positive birds (n = 102), we found more than one compound in 48 (47.1%) of the birds. Of these, 31 birds (64.6%) presented with two different compounds; 16 (33.3%) presented with three compounds and one bird (2.1%) presented with four different SGARs. Of all SGAR-positive birds showing more than one SGAR in the blood, 81.2% were Egyptian vultures (n = 25; 58.14% of all), red kites (n = 10; 40%) and black kites (n = 4; 50%). BF (Brodifacoum), DF (Difenacoum), FL (Flocoumafen), BM (Bromadiolone).
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