oh dear do IMG links no longer work here?
well if anyone can let me know how i post pics here now id be grateful...cant find an upload button anymore.....
Male pearl in the process of molting into his adult non-pearled plumage.
Male in the process of losing his juvenile tail bars.
Based on the age you provided, this is a female, simply because she has retained her pearl markings. Pearl females usually have yellow heads as well, so disregard this "usually" male trait.
I'm going to guess that this is PROBABLY a male, since you said he's among the youngest. He seems to have more yellow in the face than typical females, which PROBABLY means he's beginning to molt into his adult colors. A wrench would be if this bird happens to be split to pied, which is another possible origin for the yellow head feathers. You'll find out for sure in the next few months.
It's very hard to tell with this pic. Lutino females usually have faint yellow-on-white bars in their tail feathers, while lutino males have solid yellow OR white tail feathers. You'll have to take a closer look yourself. And keep in mind that the males get their solid tail feathers in their adult plumage, so if this bird is less than a year old and has barred tail feathers, it's possible that it's a male who didn't molt into his adult plumage yet. But if you see clear solid tail feathers, it's a male.
Hard to tell in this pic -- I can't see enough of the face. Is this the same bird as in the fourth pic? If it's only a few months old, I can't tell. If it's a year old (or almost), then I'd say it's a female.
I assume the bird on the left is the same as in the fourth pic, so I'm sticking with male. The bird on the right is the same as the one in the first pic, right? In any case, it's a male pearl in the process of losing his pearl markings.
and a few together
Male -- yellow head -- but hasn't yet lost his barred tail feathers.
The one up top is still a bit iffy, but I'm going to guess female, unless it's still in its first set of feathers. The two below are males.
yes that bird in the last picture you answered on is the maturist bird out of them all...she is just over 2 yrs old. the 2 birds with complete grey faces are 8 months old...and the other three are 5months old