I have had the good fortune to live in Alaska, Washington, North Dakota, Texas, Colorado, California, Nevada and Arkansas, just to name a few - - -
And you are correct there are many more birds and hunting opportunities in the west.
I came to Maryland based on the stories of waterfowl hunting on the bay - - - needless to say your post title says it all - - -
Part of the problem is the decline in bay grasses, and on the Western Shore the decline of agriculture and changes in farming practices.
When I was a kid there was corn stubble everywhere - - - now all you see a few weeks after September are winter cover crops - - - good for the geese - - - but crap for the ducks.
I have to believe that the increase in the number of grain filled impoundments has served to make hunting here much tougher as the birds seem to concentrate on those farms, why would they go elsewhere.
It has done good for the birds as having food available helps, but it does make it harder for the average hunter to find birds away from the concentrations - - -
Now instead of hunting birds, we hunt for a spot next to a rich farmer/impounder who is shooting that day - - -
Sad state of affairs - - - but I am still farm shopping - - -