can you breed siblings?

[Chosen Chickens]

With the pair of mandarins and woods I am getting I was wanting to hand feed and tame some of their offspring, and maybe sell the parents if they aren't that tame... my question is, is it a problem to keep 2 ducks from the same clutch and breed them together or is this asking for problems?

 

[Dances with Ducks]

Here are some articles that discuss inbreeding and line breeding in ducks and other poultry. There is some variation in opinion, but I think it is generally considered safe for at least one generation.
https://www.backyardchickens.com/forum/viewtopic.php?id=182348&p=1
http://www.bantamclub.com/articles/unrelatedparents.html
http://www.acornhollowbantams.com/getting_started.cfm

 

[Chosen Chickens]

Thanks..... perfect... I appreciate the links... it seems like most are okay with line breeding as long as it isnt straight brother sister