Bow-legged 3 week old ducklings

[backyardbirds394]

These 9 white layer girls were hatched on 7/30/18. Recently, it appears that 2 have bowed leggs. I suspect a niacin defiency at first, but these are the biggest ones, and their sisters’ legs appear normal. I did not hatch these girls, they were from Wisconsin. They hang out in 3 pairs and one triplet, which might be their blood kin, or just a coincidence. It might be a birth defect? They move around eithout exhibiting any signs of discomfort or pain, they are a little bit slower, but they dont seem to have a problem with it. What could be the cause of these weird legs?

 

[Miss Lydia]

They need to be on B complex liquid we have seen some great results by using it TSC has the best one in the cattle section it says injectable But is given orally to our birds. 1ml per duck a day for 1 week symptoms should be much improved if its a deficiency and most likely it is. Deficiency can happen in a clutch ofduckling where just a few are affected.