Although very numerous, these birds are highly dependent on a few key stopover habitats during their migration, notably Mary's Point and Johnson's Mills along Shepody Bay, an arm of the Bay of Fundy.
Aínda que son moi numerosas, estas aves son moi dependentes duns poucos hábitats clave onde fan escala durante as sús migracións, notablemente Mary's Point e Johnson's Mills na baía de Shepody, un brazo da baía de Fundy.