Male seems very hungy and aggressive

[solarx10]

The young male that comes around was throwing himself at the glass door today very hard. Out of the 10-15 squirrels that come here, none show that behavior. He's always been a little different than the others and I've often wondered if he was orphaned when he was still to young. He is also the only one with a blacker face, there is one other, a female with a dark face so they may be siblings.

When I first moved in there was a fox/black squirrel was coming around everyday to the front and back yard. she disappeared in early Nov.

Are the fox's and blacks more aggressive?
Was he just never taught to get food on his own?
He seems very desperate for food at times. He's very thin and his head looks too big for his body. I don't know if that's because he's part fox or not.

Here are just some pics:
The fox taken on Oct 1 2012
http://www.finaltransmission.com/oct1.jpg
http://www.finaltransmission.com/oct3.jpg

The baby that I think is the male, taken on Sept 19 2012
http://www.finaltransmission.com/sept19.jpg

Until I started feeding the others, these were the only 2 that came in the back yard.

here's the male taken Feb 12th
http://www.finaltransmission.com/littlemalefeb.jpg

one note, the fox that was here was very aggressive towards all the greys.

[SammysMom]

They can be extremely "pushy"! I have them and they do throw themselves at the sliding glass door if breakfast is a bit late.:shakehead

[solarx10]

The others will tap or lightly hit the door, but I thought he was going to hurt himself.

Would he be that aggressive to me if I went out there during one of his temper tantrums?

On calmer days he'll run up to where I'm putting the food down, with me there.

[SammysMom]

I have a few that climb right up my leg if I don't move quickly enough...:shakehead