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56:31 Episode 05: Yukon-Kuskokwim Delta, Hunting Science Episode 05: Yukon-Kuskokwim Delta, Hunting Science	Episode 05: Yukon-Kuskokwim Delta, Hunting Science huntingscience podcast birds goslings delta survival geese rates food population 990s alaska yukon mark science success brandt river brand breeding study questions From Mark Lindberg 70 plays 0