Looks like a Sanderling in non-breeding plumage.

https://www.allaboutbirds.org/guide/Sanderling/photo-gallery/64814471

Top, you get time to duck under the covers whilst the under-bed monsters chow down on the bottom bunker.

This Be The Verse

BY PHILIP LARKIN

They fuck you up, your mum and dad.   

    They may not mean to, but they do.   

They fill you with the faults they had

    And add some extra, just for you.

But they were fucked up in their turn

    By fools in old-style hats and coats,   

Who half the time were soppy-stern

    And half at one another’s throats.

Man hands on misery to man.

    It deepens like a coastal shelf.

Get out as early as you can,

    And don’t have any kids yourself.