oops, looks like I posted twice (I thought my computer was playing up the first time, but I think it was because I am new and posting images).
Very cute. I think based on the fact that they have gone through several hands, I have to wonder if they are definitely Pilgrims (not necessarily someone trying to deceive, just a case of getting confused along the way). Visually they all look similar in colouring and beak colour except the largest one is different (in the first picture bottom left, and in the second picture in the middle with back facing the camera), it has a yellow beak and the lighter colours. I am not sure if perhaps that one just hatched earlier, or if that may be a sign it is a different sex.
Not that it really matters at this stage (not like they can be changed), but if they can be confirmed as probably Pilgrims, then I will try to take regular photo's and post them as they grow (might help to explain for the next person how you tell a male from a female at certain stages).