Hi, I have 4 Horsfield hatchlings (3-4 months old) and they've been with me for 3 weeks.  It took me one week of observations to tell them apart and last Sunday I weighed them.  I've weighed them again today and 3 of them have dropped 1-2 grammes, whilst one has gained 3 grammes.  Do I need to worry?  I did not weigh at exactly the same time of day, and I suppose they are no different to humans in that some weight fluctuation is to be expected based on toilet/eating habits.  Should I be weighing them weekly or am I just causing myself extra stress?!  Any advice and reassurance appreciated, thanks.