Here's the cool part - we have not one but two these year. One is in the upper right corner of our front window, and the other is down sort of above the holly bush on the left side. Very awesome! This one caught a snack this morning.
I was trying to get some pics not only of the spider but of the web...
Here's Daisy, watching me take photos. The window spider is right above her head. I'm sure if they came in proximity to each other Daisy would snarf the spider up and instantly forget it ever happened.
http://bugguide.net/ I found out that the male tends to live with the female until the eggs are laid, and considering the female in the window is enormous - maybe the male is still in the web. I didn't find a male, but hidden in the bushes of the web on the left side was this egg sac! That certainly explained why the female on the left was quite a bit smaller than the female in the window.
Oh, and you don't have the huzz yet - check out these spiderlings that will soon habit our front holly bush.