2800sqft to gree range, how many birds?

[jmc0369]

I live in rural San Diego County (Valley Center) and have begun fencing off about 2800sqft of yard for chickens and a few ducks (separate housing with 150gal stock tank/pond for the ducks). Planting Jujube, Persimmon, Mulberry, Guava, Sapote, Cherimoya, avocado, fig, loquat, and a few other fruiting vines (on the fence) in that space. How many chickens plus 3 ducks could I maintain in that space and not have the chickens turn it into moondust?

 

[DobieLover]

I would avoid planting the avocado. It is toxic to chickens. I'm not sure about the rest on your list so I suggest you research them.
So much depends on the breeds & how well things grow without the birds that it's nearly impossible to answer.
I would start with 10-12 chickens in addition to the ducks and see how things go.

 

[aart]

I'd be concerned that they will destroy the plantings before they get established.

 

[Shadrach]

I live in rural San Diego County (Valley Center) and have begun fencing off about 2800sqft of yard for chickens and a few ducks (separate housing with 150gal stock tank/pond for the ducks). Planting Jujube, Persimmon, Mulberry, Guava, Sapote, Cherimoya, avocado, fig, loquat, and a few other fruiting vines (on the fence) in that space. How many chickens plus 3 ducks could I maintain in that space and not have the chickens turn it into moondust?

Old school farming style might help you on this one. Divide your plot into sections and move the chickens from section to section, before they plant everything upside down for you.
Are you expecting them to get a significant portion of their nutrients from this area?
As a rough guide. Jungle fowl will make use of at least an acre to live off per family group.
I agree with DobieLover and suggest no more that 12 chickens. If the plot is interesting and well thought out you could divide it in half and still give 12 chickens more space than the bare minimum recommended which is considerable less than half your section.

 

[jmc0369]

Great feedback. The trees are in mortared granite rock rings over 1/2" hardware cloth and fenced around them, so they are well protected from gophers, rabbits, and birds. They will not be producing much for a few years, but eventually, the trees could provide a full canopy and a good portion of their diet.