Integrating ducks into my flock

[SJUDD]

Good morning, all. My girlfriend has 2 Pekins and 1 Runner duck... I have 3 Mallards and a Cayuga. Her father recently passed away, leaving the running of the entire ranch to her, without any assistance. Because of this, she needs to downsize her animals. She asked me to take her 3 ducks. I have the room for them but I am not sure how to integrate them into my flock. I have an empty chicken coop and told her to drop them off in there today instead of putting them in my duck pen. I put food and water in there this morning so that when she drops them off, they will have what they need until I get home from work tonight. I was thinking about keeping them in there for a couple of days, letting my ducks hear them but not see them. Then I was going to let them out when I let mine out to forage in the morning and slip them into the pen when I put them all away. Do you think this will keep any of them from getting beat up? One of her Pekins is about 6 months older than my ducks and the other two are the same age. My biggest concern is that the one Pekin is about twice the size of my ducks.... I don't want mine to end up hurt by her if she goes dominant female on them.
Thank you for any advice or suggestions.
Sharyl

 

[sourland]

Are there drakes involved in either/both flocks?

 

[SJUDD]

I do have a Mallard drake

 

[sourland]

Most likely your introduction problems will be minimal. Even though your friend's one duck is larger, your ducks will have the 'home field' advantage. Having only one drake will also be a good thing.

 

[SJUDD]

Here is a picture of the new ones.

 

[SJUDD]

They are in the old chicken coop until I can be home to make sure all goes well when I put them all together.

 

[SJUDD]

Integration is happening tomorrow when I have the day off to keep an eye on them. Any suggestions?? I am planning on letting all of them out in the yard to be together before I put them all in the same pen. is that the best idea??