We visit the Fraser Estuary, where fresh water meets the salty Pacific Ocean in British Columbia, Canada. Scientists are confirming what locals and birders have long known -- these mudflats are a unique and important pitstop for Western Sandpipers during their epic migration. The Pacific Flyway is a migratory route for at least a billion birds. For many, like the Western Sandpiper, it’s an epic journey twice a year. Each spring they fly from wintering grounds in South America all the way to the Arctic where they breed in the summer. They then fly back down in the fall. Our understanding of what fuels that journey is changing, and a port expansion could jeopardize an important food source. There's more to the story!Learn more about the Fraser River EstuaryCheck out the shorebird conservation partnershipLearn why First Nations oppose the Delta terminal expansionFor the full transcript and more visit BirdNote.orgBirdNote is an independent nonprofit media production company. Your dollars make it possible to create sound-rich shows that connect you to the joys of birds and nature. Support BirdNote’s conservation mission, and get more of the content you love, by subscribing to BirdNote+ at https://birdnote.supercast.tech or make a one-time gift at BirdNote.org.Thanks!