Cinnamon (Fallow) Green Cheek genetics
Please note that  the fallow green cheek has been mis named years ago
and is really a cinnamon  mutation. 
( As far as we know,  there are no fallows yet  from the green cheeks species, 
fallow characteristics are their  red eyes.)
What will your off spring look like if you have  a visual mate 
with a normal mate. Here are the following combinations
Pair 1:
Male  and female both visual cinnamon.( formerly called fallow) 
Offspring: All your offspring will be visual cinnamon.
Pair 2:
Male visual cinnamon.( formerly called fallow) with normal female
Offspring:
All you male offspring will be  split to cinnamon, all your female off spring will be visual cinnamons. With this combination you do not have to sex your birds.
Pair 3
Male Split to  cinnamon. with visual cinnamon female
Offspring: 
your males will be either visual cinnamon or split to cinnamon
your females will either be visual cinnamons or normals.
Pair 4
Male Split to cinnamon with normal female
Offspring: 
Males will be either split to cinnamon or normals,
females will be either visual cinnamon or normals.
Pair 5:
Male normal with visual cinnamon female
Offspring:
All males will be split to cinnamon males, 
all females will be normals.
Note a split to cinnamon.( formerly called fallow) male will not look any different than a normal male and
you will need to know what parents he came from to determine if he is split to cinnamon or normal.
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Pineapple Mutation
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Step 1:
You will need to set up a pair   consisting of a Cinnamon Green Cheek Conure  and a Yellowsided conure. 
It can be either a  Cinnamon Male and Y.S female or vise versa.

All  will have the following babies from this pair:
All normal looking birds will be males, however, they will have both genes from each parent 
and are therefore called double split males.

All  visual birds will be females, color depending on what  the male parent bird is.
If you  picked a Y.S. male for your pair, all females  will be visual  Y.S.
If you picked a Cinnamon for the male than all females will be cinnamon.
Step 2
You will need to set up a pair  consisting of  a double split male and a visual female ( can be either Cinnamon  hen or  a Yellow Sided hen. )

Your will have the following babies from this pair:
You will get a variety of  different mutations from this pair, including the pineapple mutation,
however all visual pineapples will be female birds.

Your other normal  looking  and  visual offspring could be split to  a 2nd mutation, but you have  no way of knowing until you breed them and  see their offspring
(With other words your normal looking birds might be normal green cheeks, they might be split to one or the other mutation or might even be double split, but no way of knowing)
Keep in mind that only the male can be split to anything.
Step  3
You will need to set up a pair  consisting of  a double split male and a  Pineapple female.
From this combination  you will get all mutations, but your pineapple offspring can be either male or female.
Step 4
You can now  pair up a male  Pineapple and a female Pineapple for lots of little Pineapples:>)
Note a double split male will not look any different than a normal male 
and you will need to know what parents he came from to 
determine if he is a double split.
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