you can alwats go download DAZ Studio(its free) and buy the birds from their site or find some poser files of birds then import them into DAZ Studio and export them so you can import the file into bryce.. These are the only two i have imported into Daz Studio but at the moment. PS: Nope sorry wont send them to you because its agains the law(copyright)
I have opinions of my own -- strong
opinions -- but I don't always agree with them.