How old and how do you tell if it's a rooster?

Chickylet

Chirping
Feb 19, 2018
39
43
66
MA
Hi,

Have some 1-1/2 wk old chicks. 90% sexed, but there's always a chance a rooster is in there. My question is when will I know? And how will I know?

Thanks,
Elissa
 

brewfarm

In the Brooder
Dec 4, 2017
48
30
49
Redmond, Washington
Yep, 6-8 weeks should tell the tale with most breeds...sometimes sooner.
Bigger and redder combs and wattles are often screamingly obvious.
Yup. I've got Rhode Island Reds. When they were about 6 weeks old the cockerels stood out. Their combs were a slightly different shade of red and bigger.
 

Ol Grey Mare

One egg shy of a full carton. .....
7 Years
Mar 9, 2014
20,622
15,059
821
Oregon
My Coop
My Coop
From what I've heard, at the hatchery, they sex the chicks by looking at the feather length on the leading edge of the wing-or something like that. But, no you can't tell the difference just by looking at the feathers. At least not with Rhode Island Reds.
Hatcheries use vent sexing....an examining of the inside of the vent. The difference between masle and female is often minimal, causing the 5-15% error rate. Below is an illustration of why it is an art rather than a science
Left Cockerel Right Pullet.jpg

Wing feather s ecing is on applicable to chicks bred specifically for it by crossing fast and slow feathering patent lines, resulting in chicks with sex linked feathering rates thst can be read in the first three days of life.
 

MANNA-PRO

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