The pectoral sandpiper's migration might be affected by global warming, as is suspected for many Arctic-breeding birds: 100 years ago, migrating pectoral sandpipers were observed to pass through northern Ohio in early-mid May and again in late August; today, the bulk of the northward migration takes place in April already, and most birds do not return until mid-September.
A migración do pilro peitoral podería verse afectada polo quecemento global, como se sospeita ocorrerá con moitas aves que se reproducen no Ártico: hai 100 anos, os pilros peitorias migrantes observábanse pasar polo norte de Ohio a inicios ou mediados de maio e de novo ao final de agosto; hoxe, o groso da migración ao norte ocorre xa en abril, e a maioría das aves non retornan ata mediados de setembro.