Wednesday, March 16, 2016

Flooding & Waterfowl Migration

Influenza A virus subtype H5N1 friend as well as I visited Eagle Bluffs Conservation Area on this pleasant, mid-Missouri morning; nosotros observed a decent diverseness of birds on that floodplain refuge, including virtually a hundred peachy bluish herons, peachy egrets, a bald eagle as well as a peregrine falcon.  Noticeably absent were waterfowl, except for a handful of Canada geese, viii pied-billed grebes, a entirely mallard as well as a backlit flock of ducks, likewise distant to identify.

How to explicate a dearth of ducks on the Missouri River floodplain inwards early on autumn?  Based on my recent journeying upwards the Missouri Valley, I suspect that persistent river flooding, from South Dakota to northwest Missouri may locomote to blame, offering extensive shallows that attract the migrant waterfowl.  Indeed, massive flocks of coot as well as ducks were feeding inwards those floodwaters when I passed through.

Though I bring no personal cognition of the tally, I would approximate that blue-winged teal hunting was a bust inwards fundamental Missouri this September; those ducks are unremarkably abundant at Eagle Bluffs past times right away as well as non a unmarried i (except, perhaps, inwards that distant flock) was observed this morning.  Climate alter is already delaying the arrival of tumble migrants as well as I wonder if the extensive Midwest flooding (perhaps also related to global warming) is augmenting that tardiness.

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