Very good, now as far as starting them on rats it can be done, even at 50 grams (pink rats which are 1 to 4 days are very small). I usually start everything on mice now, they are more enticing and give me a higher success rate when it comes getting my hatchling to take their first meal easily, they get switched to rats by meal 2 or 3 (the advantage is that I produce my own feeders).