Access: See Getting to Boundary Bay.
The passage of the snow geese coincides with the arrival of migrating western sandpipers. During April and May each spring half a million of the Alaska-bound shorebirds pass through the Fraser delta and Boundary Bay pausing for just three days to refuel on intertidal zone invertebrates.
Breeding and rearing in the glow of the midnight sun is a brief affair with most adults returning to the Lower Mainland from June to mid-July. Juveniles are abandoned after a relatively brief period of parental care and remain behind to fatten and strengthen until late in the summer, passing through the Pacific Northwest in August and September on their way to points as far south as coastal Peru and Chile.