What kind of chicken lays a brown speckled egg? I get them consistently in my small flock. Sometimes they have more tiny speckles than other days. My picture doesn’t really capture the speckles that well.
I've seen speckles in every brown egg-laying breed we've had with the exception of Australorps. (RIR, Barred-rock, EE-cross, Silkie-cross, etc.) Usually, the hens that lay speckled eggs will continue to lay speckled eggs.
Those speckles look like excess pigment...and yes, they can vary from day to day.
'Speckled' eggs can happen for several different reasons...very few, if any, of which are a 'problem'.
Can be caused by:
Excess or uneven pigment coating.
Excess or uneven cuticle(bloom).
Excess calcium deposits.
Porous eggs can appear speckled.
Some birds lay them consistently, some only once in awhile.
The pigment or bloom can change appearance when wet, then change back when dry again.
As long as bird is getting a good diet and is healthy in every other way, it is no cause for concern.