Just a couple of little things;
The Chocolate used in these examples, is the more common Sex-Linked Chocolate.
The Magnifying Glass is just a visual symbol of what gene a bird is 'split' for or carries, but can't be seen.
Sex-Linked Chocolate Breeding Examples

Chocolate Rooster x Black Hen = Black Split Chocolate Males & Chocolate Females.
Chocolate Rooster x Black Mottled Hen = Black Split Mottled & Chocolate Males & Chocolate Split Mottled Females.

Chocolate Rooster x Lavender Hen = Black Split Lavender & Chocolate Males & Chocolate Split Lavender Females.

Chocolate Rooster x Cuckoo Hen = Dark Cuckoo Split Chocolate Males & Chocolate Females.

Chocolate Rooster x Blue Hen = 50% Blue Split Chocolate Males & 50% Mauve Females
50% Black Split Chocolate Males & 50% Chocolate Females
Chocolate Rooster x Splash Hen = Blue Split Chocolate Males & Mauve Females.
Sex-Linked Cuckoo/Barred breeding Examples

Black Rooster x Cuckoo Hen = Dark Cuckoo Males & Black Females

Mottled Rooster x Cuckoo Hen = Dark Cuckoo Split Mottled Males & Black Split Mottled Females

Lavender Rooster x Cuckoo Hen = Dark Cuckoo Split Lavender Males & Black Split Lavender Females

Blue Rooster x Cuckoo Hen = 50% Dark Cuckoo Males & 50% Black Females
50% Blue Dark Cuckoo Males & 50% Blue Females
Splash Rooster x Cuckoo Hen = Black Dark Cuckoo Males & Blue Females
Hopefully you found this easy to follow, They're just the basics, but I find it handy to 'See' genes rather than having them just written down.
The Chocolate used in these examples, is the more common Sex-Linked Chocolate.
The Magnifying Glass is just a visual symbol of what gene a bird is 'split' for or carries, but can't be seen.
Sex-Linked Chocolate Breeding Examples
Chocolate Rooster x Black Hen = Black Split Chocolate Males & Chocolate Females.
Chocolate Rooster x Black Mottled Hen = Black Split Mottled & Chocolate Males & Chocolate Split Mottled Females.
Chocolate Rooster x Lavender Hen = Black Split Lavender & Chocolate Males & Chocolate Split Lavender Females.
Chocolate Rooster x Cuckoo Hen = Dark Cuckoo Split Chocolate Males & Chocolate Females.
Chocolate Rooster x Blue Hen = 50% Blue Split Chocolate Males & 50% Mauve Females
50% Black Split Chocolate Males & 50% Chocolate Females
Chocolate Rooster x Splash Hen = Blue Split Chocolate Males & Mauve Females.
Sex-Linked Cuckoo/Barred breeding Examples
Black Rooster x Cuckoo Hen = Dark Cuckoo Males & Black Females
Mottled Rooster x Cuckoo Hen = Dark Cuckoo Split Mottled Males & Black Split Mottled Females
Lavender Rooster x Cuckoo Hen = Dark Cuckoo Split Lavender Males & Black Split Lavender Females
Blue Rooster x Cuckoo Hen = 50% Dark Cuckoo Males & 50% Black Females
50% Blue Dark Cuckoo Males & 50% Blue Females
Splash Rooster x Cuckoo Hen = Black Dark Cuckoo Males & Blue Females
Hopefully you found this easy to follow, They're just the basics, but I find it handy to 'See' genes rather than having them just written down.