There are a couple documentable reasons for what you are seeing. First the geese are just starting to check the fields for edible sources of fat they need to prepare for migration. They babies all can fly and they are joining up with other family groups as they leave the marshes where they were born. Ducks and other large birds seldom double clutch. They use too much body resource to sit on a brood, raise it then start over, plus the drakes are moulting and sperm production is no longer a priority. Often what you are noticing are hens who lost their first nests and started over, they hatch later than successful hens. Hens who nest and succeed early often have flying chicks by now, compared to say hens that nest later on mtn. reservoirs and still have chicks in fuzz. Teal will start to migrate soon and the local birds will begin to leave when hunting pressure increases, then we sit and wait for northern replacements. The doves should be thickening up in the grainfields by now as they prepare to migrate, and doves can double and triple clutch, they are smaller and spend less time raising babies, babies mature faster etc.
There is no help for this kind of insanity. I'm just a duck hunter, and should not be held accountable for all my actions between October 1st and freeze-up. Gordon MacQuarrie