Do they eat old food?

Is it a chickadee or a nuthatch?
I find myself unsure about this
and so many other things.
The feeder rests
under the overhang.
I hold my breath and stay still as they come,
their delicate beaks
extracting a single seed;
Their thanks seem to glow in the morning air.
I should replace their food.
How old is it?
Do they eat old food?
I feel unsure about this
and so many other things.
If I take down the feeder,
They might think it’s gone and fly away.
It would take 5 minutes
to refill
but to them,
Maybe that pause feels like five hours or even five months to them.
The rain has made them hurry
when they feed.
They swoop in and quickly fly away
as they flash against the gray sky.
I sit quietly, letting my coffee cool as I watch.
These are only brief moments
for me
Yet for a chickadee, it might be a lifetime
Or perhaps a nuthatch
I find myself unsure about this
and so many other things.