Three years ago we purchased new double-pane windows and doors for the house.  The glass is of pretty high quality, so shooting birds through it works well.  We've also added a couple of bird feeders that attract many local species.  In fact, I've spotted over twenty different species in the area around our feeders.  Last fall I purchased a new carbon fiber tripod that helps stabilize my camera when shooting.  This combination has made it much easier to get relatively high quality images of our feeder birds.  So, instead of simply inserting the images in my normal small bird folder, I created a new folder for "Backyard Birds."  It's here:

http://aehass.zenfolio.com/p319500579

I've set the folder up so the most recent images are ordered first and simply add new photos chronologically.  I've found that shooting as straight as possible through the glass works best and keeping the front of the lens as close as possible to the double-pane glass seems to help image quality too.  The windows are tinted, so I normally have to make some minor adjustments to white balance when editing.  This method of shooting allows me to normally get within about ten feet of the birds, so shooting with a 300mm lens pretty much fills the frame unless the bird is particularly small.  Here's a few examples I've taken to date.

Male House Finch facing right Female American Goldfinch Finch in morning sun Why they call me Red-Bellied Female Eastern Bluebird on wrought iron This weeks Male Eastern Bluebird