Gorgeous! The only thing I can think of is the perspective on the roof of the bird house, it looks as if its pointing downwards, where as the platform is spot on ^_^ The texture of the house is great, and the details in the birds is superb, really beautiful drawing <3
Aww, so cute! My only critique is that the twigs on the left seem too small compared to the birds. If they had been behind the birdhouse, it would have been okay, but the way they are now, it is unrealistic.