What is this tree ? Carya ?

Hi,
I am not sure what this tree sapling is. Can this be Carya cordiformis ?
Thanks in advance

 

Even zooming in I cannot see enough detail to see what the leaves look like.
Cannot tell if compound leaves or not.
Please can you add clear close ups.

Carya cordiformis leaf - Google Search

 

Thank you for having a look, but I am sorry I can't go back there easily and take another picture at the moment.

 

I am attaching a zoom of the leaves ; it looks like they are compound.

 

Actually, I now believe it's just an elder (Sambucus nigra).

 

Looks good for a hickory seedling to me. Elder can be discounted, as yours has alternate leaves, elder has opposite leaves.

 

Sorry to be that confused, but the picture I posted was not the one I intended to post ; and was indeed the picture of a Carya cordiformis.
I will post the correct picture soon.

 

Here is the correct picture ; note that there is a stake close to the sapling I would like to identify

Could that be a Carya glabra ?
Its variation Carya ovalis can have red twigs and veins like this one.

 

Here is a new picture. I have surrounded it in red. The other things are sticks.
Given the color, I would say it is a Carya cordiformis