Ok have another step for you guys that have wood duck boxes for next year. Get some size 5 or 6 metal bands from the link below the pictures. I just have mine numbered only but you can have your name/phone number etc. You will need an applicator to put the band on their leg without hurting them by placing it on too tight.
I have been placing bands on the ducks using my wood duck boxes for a number of years. It is neat to see which hens come back to certain boxes. I had one hen disappear and 3 years later show up in a set of boxes a half mile away from where I banded her. That is why I just have them numbered so I can keep track of location, year etc. I had one hen use the same box 4 years in a row.
Next spring keep an eye on your nests. Stuff a towel in the entrance hole and then open up your door and drape another towel over the hen. They will not like it and immediately poop on everything. If you can get it over her head quickly she will calm down. Keep her head and body covered and try to free a foot then place a band on it. I usually uncover her and place her back in her nest. My daughter absolutely loves going with me to check the boxes now so she can hold them. How many kids can say they have held a wild duck!
If you look at the attached picture you can see a band on her right leg. The second picture it is on her right leg also.
View attachment 13717 View attachment 13719
https://nationalband.com/bird-bands/
https://nationalband.com/bird-band-applicators-style-number-1242s/