2.1 Study Population
The study population was non-sympatrically distributed 80 individuals of
four species of genus Turdus of the Turdidae family.
Samples include two to three contour feathers, tissue from breast and
liver of birds accidentally injured or died during migratory season of
2017-19 in autumn and deposit in State key laboratory of wildlife
detection center in northeast forestry university, stored at 4 °C. The
sample material, voucher identity, and geographical location are
presented (Table.S1; Figure 1).