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Conservation biologists recognize that coastal habitats in the Bay of Fundy and northeastern Maine are the most important southward staging areas for shorebirds in eastern North America.  Once shorebirds complete their nesting season in sub-Arctic Canada, they head south.  Tens of thousands stop in our coastal wetlands to fatten up in final preparation for their non-stop, energy-draining 2,000 mile migration across the ocean to South America.

Downeast Maine’s region of coastal bays and estuaries extending from the Narraguagus River estuary to Cobscook Bay provides internationally significant feeding and roosting habitat for 35 of 38 priority species of shorebirds identified in state and federal migratory bird plans, including:
  • The largest late summer and fall populations of Semipalmated Sandpipers and Seimpalmated Plovers along the Maine Coast
  • Some of the largest populations of migratory Black-bellied Plovers, Short-billed Dowitchers, Greater and Lesser Yellowlegs and White-rumped Sandpipers in Maine
  • The largest population of Whimbrel, a species of international concern, in the United States

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While many shorebirds are doing well, others are declining, some dramatically.  Declining species that regularly use Maine’s migratory staging areas include the Black-bellied Plover, Semipalmated Sandpiper, Least Sandpiper, Short-billed Dowitcher, Ruddy Turnstone, Red Knot and Dunlin.                                                                                   
Eastern Maine’s southward shorebird migration extends from early July to the end of September, with a few species straggling on into October and November.  According to the Maine DEP “An individual shore bird only stays on the staging area between 10 and 20 days.  In that short period of time, that bird must double its body weight to acquire the fat reserves needed to fuel the next leg of its migration, a nonstop, over the ocean flight to South America.  Once over the ocean, the birds are committed.  If they do not have the reserves to reach South America they plummet into the sea or may reach their wintering areas only to die shortly after.”

Studies document that shorebirds are more affected by human disturbance than any other group of waterbirds.  For shorebirds to satisfy their energy requirements, our tidal flats must be brimming with food, and people and pets need to keep their distance.  Shorebirds also require undisturbed roosting areas above the high tide mark where they rest and digest between spells of intensive feeding.

As Maine’s coastal lands succumb to development, fewer and fewer optimum shorebird staging areas, those along the migration route that provide adequate food in close proximity to suitable roosting sites, remain undisturbed.  Shorebirds exhibit extreme fidelity to their traditional staging areas, which makes them particularly vulnerable when habitats are degraded by development and disturbance.  Shorebirds are reluctant to relocate to new areas but will tend to “tough it out” when their habitat is compromised even if it means they don’t get enough food and their migration ultimately fails.

Migrating species require an unbroken chain of habitats, each essential to a phase of their yearly cycle of travel.  If the chain is broken at any point an entire species may be lost.  At Pleasant River Wildlife Foundation we feel a keen responsibility to help protect staging areas that are vital to shorebirds and that exist only in Downeast Maine.  These lovely visitors truly need our help if they are to continue to grace coastlines stretching from subarctic Canada to Patagonia.

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PO Box 154 • Addison • Maine • 04606 • [email protected]