Good questions and I think the answer DOESN'T lie in your yard, but the foragable foliage, flora and fauna - I need to look up that fauna part
It really does make a difference since honeybees (at least in my experience) tend to forage away from their hive, but my property is so small, they have little choice but to look elsewhere. The also seem to forage away from the hive so not to attract attention to food sources. I have seen bees (other than mine) in my yard take off and fly to unknown spots far to the South of my property into the Great Pinelands of NJ.
Meanwhile, my bees take off and then fly up and away, they rarely just hop from my hives and land on plants, flowers or trees in my yard.
I have a sustainable Spring to Fall crops for many hives, between the thousands of acres to the South, garden centers to the North just 1/2 mile away, cranberry bogs to the west about 1 mile away and a sizable lake with lilypads half way to the bogs and also many wetlands, streams and ponds. The big yield of pollen in the late Spring is Locust trees which are plentiful - this is my main crop of food for the hives SECOND run of brood.
It is important to know that EVERYTHING (there are NO EXCEPTIONS in this Universe of ours) "Cycles" including the WAVES of hatching brood, the emptying of their cells and the laying of a new egg, then it starts all over again. CYCLING is a great topic to discuss in the DARKSIDE FORUM, it is interesting, how everything from heart-beats, breathing, planet rotation, musical notes, radio frequencies, bumps in the roads ALL CYCLE - everything does, everything.
If your local pollen and nectar "occupies and overlaps" your warm seasons, your bees can flourish - but it is something you need to discover yourself.
I think using Google's satellite mapping is a great way to spot possible hot-spots that can serve as grocery stores for our bees. I'll upload a photo of my area to show you what I have around me as soon as I get to mark a map, probably tomorrow after work at 3pm est. You'll see how I can justify many hives, but as you see I need to better tend the ones I have first.
In my case, I have a 105x55 lot with a 40x20 home, 37x9 motorcoach and 2 sheds each 8x10. That leaves very little room for hives, that's why 3 is the limit - before the motorhome I could justify more, but there is a give and take to what available space I have.
More later, I want to talk about this more - please add any comments, I think it is a good topic. Now, it's 11:15pm and I go to work in 6 hours, goodnight