We are going to make a new pen for our 2 pekin ducks. Right now they are in a 10 x 10 chain link enclosure. My husband wants to pour a concrete floor for the pen or use a wood platform for the floor. Do ducks have any problem walking on concrete? We are trying to make it easier to clean out their pen. They are free roaming ducks during the day, they are only in their pen at night to keep the animals away from them. Any suggestions? Also, these 2 pekin ducks (both female) are about 7 months old. They have been laying one egg each every day since they were about 5 months old. Will they continue to lay through the winter? Do they use the number of daylight hours to determine whether to lay or not? These are my first ducks, it has been a learning curve to be sure. I will probably increase the flock this next spring but only want females. I don't want to deal with the drakes mating and killing the females. I see that some of the livestock mail-order companies sell sexed ducks. Are they reliable? What is a good company to work with? I am very concerned about the poor ducklings in the mail! If there is anyone in Central Texas that sells sexed Pekin ducklings please contact me. I would much prefer to drive and get them than put them in the mail. That sounds cruel! Thanks in advance!