Biomagnification factors from whole fish to thick-billed murre liver across all species were generally higher for Σ21PCB and ΣDDT.
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Facebook Twitter Pinterest The grey range thick-billed grasswren is among a 'forgotten flock' of birds at significant risk of extinction in the next two decades.
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Skimmers and thick- billed tern were plentiful here right in the heart of the continent.
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The birding is some of the best in the park including specials such as Pel's Fishing Owl, Thick-billed Cuckoo and Racket-tailed Roller.