What's the meaning of the poem A Black November Turkey.

My foreign language teacher just sent us the poem.But I really can't understand the meaning of it which was written by Richard Wilbur.Could you please help me with it?Thank you very much!~

                                               A Black November Turkey

Nine white chickens come

With haunchy walk and heads

Jabbing among the chips,the chaff,the stones

And the conhusk-shreds.

 

And bit by bit infringe

A pond of dusty light,

Spectral in shadow until they bobbingly one

By one ignite.

 

Neither pale or bright,

The turkey-cocked parades

Through radiant squalors,darkly suspicious as

The ace of spades,

 

Himself his own cortege

And puffed with the pomp of death,

Rehearsing over and over with strangled rale

His latest breath.

 

The vast black body floats

Above the crossing knees

As a cloud over the thrashed branches,a calm ship

Over choppy seas,

 

Shuddering its fan and feathers

In fine soft clashes 

With the cold sound that the wind makes,fondling

Paper-ashed.

 

The pale-blue bony head 

Set on its shepheard's-crook

Like a saint's death-,ask,turns a vague,superb

And timeless look

 

Upon these clocking hens 

And the cocks that one by one,

Dawn after mortal dawn,with vulgar joy

Acclaim the sun.