I’ve seen quite a few Brants along the shores of Cape Cod Bay  recently. They are a small goose with a distinctive broken collar pattern on their necks, which makes them easy to identify.

Their diet consists mainly of eel grass found in the tidal flats which is why they usually feed in flocks at low tide when vegetation is accessible.

When doing a bit of research I found an interesting fact: Brants possess a highly developed salt gland which allows them to drink salt water.