“…For bird species that conduct seasonal migration, toxic chemical contamination can occur on the breeding or non‐breeding grounds or at stopover sites during migration. Migratory bird species have been found to have different types and concentrations of toxic chemicals between their breeding and non‐breeding grounds (Albert et al, 2021; Parolini et al, 2021) and when compared to resident species (Corsolini et al, 2011; Hong et al, 2014; Jin et al, 2016; Kunisue et al, 2003; Minh et al, 2002; Tanabe et al, 1998). These differences are a likely consequence of migratory species encountering different toxic chemical contamination profiles across their annual geographic distributions.…”