My house is filling with knit birds again, but that's okay.
The two penguins are for my friend, but the little ones I tend to knit compulsively. The penguins are Pasha from Knitty (and I have longed for an excuse and enough materials to knit that pattern for years!) and the little ones are the aptly named Little Birds by Duo Fiberworks. Free patterns!
Purple penguin, with a better look at her flippers.