ahhh, my people... duck color genetics <3
especially lilac/lavender!
sooo: brown first
if all your brown babys are girls they´ve gotten their brown from their dad!
(short course genetics: ducks are the other way around then humans (XX girl, XY boy) ducks have Z and w as their sex determining chomosome and it is ZZ drake and Zw duck, the Z are bigger than the w so there is "not enough room" for every gene on the w , brown (marked as "d") is one of these genes with no location on w)
so brown duck is d/- , brown drake is d/d and brown carrying drake (no brown plumage) is d/D+
A duck can not give her brown gene to her daughters because she gives the sexe determining "w" and it has no location for brown!
If a drake is brown himself he would have to have two brown genes so d/d
ALL his daughters would be brown because he will give every duckling one brown and a female duck carrying one brown will show brown (d/-)
If his sons will be visually brown depends just on the duck, if she is visually brown she will give her brown to her sons and voila, they are brown (d/d)
if the duck is not brown the boys will just be brown carriers and not visually brown, (d/D+)
in your case you have no visually brown drakes so they must be carriers (d/D+)
HALF of the daughters of a carrier are brown, the color of the duck is unimportant
HALF of the sons are also carriers (if paired with a non brown duck), the other half is no brown (D+/D+)
if paired with a brown duck, half of the sons are brown , the other half are carriers
so: if you happen to see ANY brown MALE ducklings, your splash/silver hen is lilac (or wathever you call a two blue+one brown duck) and definitely the mother of this one
on another note: ALL sons of a brown duck carry brown and can so give brown to their daughters.
but i dont think she is brown...
this is a baby photo of ghost (far right), a male silver (two blue) of a friend of mine, hes older now and nearly white with a dark bill
View attachment 3971594
As I see your clearly brown + blue girl (if lavender Bl/bl d/- or lilac Bl/Bl d/- we will see)
i wonder about mine (pictured below in the front, back is her sister)
could she be lilac (two blue + brown)?
yours is clearly darker toned but same color?!
View attachment 3971593
unfortunately i dont know the parents of these two girls, i rescued them out of a 30m² garden, together with two others...