For the front of the yard I am considering a coppice stand of Ash and Linden trees.
Linden Trees are bee fodder and dynamic accumulators as described on Romancing the Bee’s site.
Pollinators will also collect pollen from wind pollinated trees like Ashes. Ashes flower in March, are nitrogen fixers, and rabbits, sheep, and microbs like the leaves. The Texas Ash, Fraxinus texensis, tolerates droughts and dry soil, and needs full sun.
Honey Locusts are also an interesting bee forage, animal fodder, and nitrogen fixer.