I use an alternative method to toe punching. It’s more expensive, but reusable. I use colored “poultry” rubber bands for their first month, then I go to leg Bandettes (pictures below). The rubber bands come in a pack of 100 for $7 (free shipping) and have 6 different colors in the one package…15-18 of each color. I buy three sizes which gets me through their first month, and like I said, they are reusable.
Age 1-10 days-old, size 4 (Be sure to check these and don't forget - they grow out of them fast)
Age 11-20 days-old, size 5
Age 21-30 days-old, size 6
At a month old, I switch to colored Bandettes that I buy at Twin City Poultry. At a month old, I put on size 7, then switch to size 9. I can’t remember at what exact age I switched sizes, but sometime around 3-4 months old, I think. My 8 month-old birds are still in size 9. At some point you will have to move to size 11 once they reach adults, but that really varies on each bird. The Bandettes come in the same six colors as the rubber bands, with the exception of purple rubber bands having to be replaced by white Bandettes. The Bandettes are more expensive. The boxes of 25 (one color per box) is $5.65 for size 7 – and $6.75 for size 9. Each band is numbered, and you can chose which sets of numbers: 1-25, 26-50, 51-75, 76-100 which is helpful if you have multiple generations of the same line or are just in need of more bands for more pens. The picture below shows 4 colors of Bandettes, but there are 6.
I’m not sure how many pens you’ll need to keep track of, but if you like this idea and want to give it a try, I can help you set up your pens to where it makes more sense and help you get a mental picture of who gets which color. Below is an example of how I will be using them for 2013. I will have 7 breeding pens, using 5 roosters. Each of my breeding pens has full hatch-mate females, so there is no need for me to keep track of each female in any particular pen unless I wanted to for a specific reason. “I” place the colors according to the names of the females, (which helps me mentally remember which color goes with who without looking it up) – (too hard to explain) but you could just use the number of the pen, such as:
Pen #1 blue - #2 green - #3 red - #4 orange - #5 yellow - #6 purple/white
I place all of my bands on their right legs, but since I have 7 pens, I also plan to use the other leg which would allow a person to go up to 12 pens. My blue male, Goliath, will be servicing 2 pens. One of his pens will have the blue band on the right leg and the 7th pen will have the blue band on the left leg. When choosing one color for two pens with the same male, it may be easier to remember if you use the same color. It's just another mental picture that helps me.
I hope I didn’t confuse you. It seems easy for me because I’ve put a lot of thought into this and I have a mental picture of my birds having specific colors so I actually AM able to do what you said…walk out into a group of birds and know who is out of which parents. Plus, the option for multiple numbering helps, too, and is much easier to read than toe punching when their feet are muddy. But the downside is it’s much more expensive. I personally think it’s worth it.
Again, If this is something you are interested in and would like help figuring it out and how it could work with your pens, I would be happy to help you set it up where it would make sense to you.