I have five 08's......three of them are 1150 grams, one is 1450 grams, (GREAT eaters) and one is 1050 grams (mouse eater and a little picky). I bought them a few months ago so I do not know what month they were born. I would say 1300 grams from a reputable breeder sounds good. I was looking at some 09's not too long ago from a reputable breeder that were 350-450 grams or so......it varies.