I am posting this to the list as I think there may be others who can use the 
information.  My husband put together a list of places he has taken me. 
Although I can walk some on flat trails and use non handicapped assessable 
toilet facilities we think that:

Possible wheelchair-accessible sites for birding, in addition
to the obvious C & O Canal towpath, Dyke Marsh, Hughes Hollow
and Huntley Meadow. My personal experience with these comes
from pushing a non-standard wheelchair (rigid frame, bicycle
tires and brakes), but I believe that all of the sites would
be accessible to motorized wheelchairs, and to standard
wheelchairs depending on the distances involved. I would
appreciate comments, corrections and additions, directed to
   Thanks, Jim Pugsley

1. Lake Artemesia, College Park, MD.  Paved paths, connecting with
the Paint Branch Stream Valley Park and the University of Maryland.
Lake Artemesia and its immediate surroundings, plus the sections of
trail that run from Calvert Road to the U. of Md. and on into the
Beltsville Agricultural Reasearch Center, ending on Cherry Hill Rd.
Facilities available in Lake Artemesia Park. Warblers, waterfowl,
Indigo Buntings, etc. (www.pgparks.com/places/nature/artemesia.html)

2. Little Bennett Regional Park, Clarksburg, MD. Park in lot off
Clarksburg Rd. at Kingsley Rd. Kingsley Rd. is graveled and not too
steep from there to the Kingsley (Froggy Hollow) Schoolhouse. This
road is gated and has no traffic unless the Boy Scouts have a campout
farther up Kingsley Rd. No facilities. Warblers, thrushes, woodpeckers,
general woodland (I have found no really useful web site for this one.)

3. Monticello Park, Alexandria, VA. 3-block square wooded urban park
that is a trap for migrating warblers, thrushes and tanagers. The first
100 yards or so is level enough (bark surface) for any type of
wheelchair, and provides the opportunity to look DOWN at warblers as
they bathe in the small stream. No facilities, but a convenient
McDonalds 3 or 4 blocks away. Somewhat hard to find the first time,
see http://homepage.mac.com/pmkane/MonticelloPark.html. For some
photos taken there see www.pbase.com/paulasullivan/monticello

4. Quiet Waters Park, Annapolis, MD. (Fee or lifetime permit) Outlook
over South River, and a network of paved paths through woods near and
to some creeks. Waterfowl, warblers, orioles, flycatchers.

5. Patuxent River Park, Croom, MD. (Permit required, yearly fee for
seniors or disabled is $2.50) (a) Blackwalnut Creek Nature Study Area,
accessible from the parking area at the fishing pier near the
headquarters building. Loop of trail and boardwalk in wooded marshy
area, plus a segment along the Patuxent River. Warblers (nesting Hooded),
waterfowl, nesting Osprey. Portable toilets (handicapped accessible)
near headquarters building, better facilites under construction in
summer 2006. (b)Road (paved) from Croom Airport vicinity into Merkle
Wildlife Sanctuary. Has field, edge, wooded, and marsh habitats.
Nesting Bluebirds, Acadian Flycatchers, Towhees, Chipping Sparrows,
etc. Good warbler walk at migration time. Both of these are in the
Jug Bay Natural Area. See www.pgparks.com/places/parks/patuxent.html

6. Terrapin Nature Park, Stevensville, MD (east end of the Bay Bridge)
Smooth surfaced trail loop through woods to Chesapeake Bay, with a
couple of ponds (observation blinds). Not sure about facilities. For
directions see the "Terrapin Nature Park" listing in
www.kentisland.cc/fun.html

7. Horsehead Wetlands Center, Grasonville, MD (just east of the Bay
Bridge). Research center, captive wildfowl, but also wood, marsh and
Bay habitats. Nesting Brown-headed Nuthatch, Wood Duck, etc. For
more info see the "Horsehead Wetlands Center" listing in
www.kentisland.cc/fun.html

8. North Central Railroad Trail (from just N. of Baltimore to the PA
line) becomes the York County Heritage Trail in PA.) Smooth surfaced
hiker-biker trail, total length about 45 miles. Much of the MD portion
is in Gunpowder Falls State Park. Stream and woodland habitat. For
parking areas and facilities see www.waba.org/new/paths/northcentral.php
or contact Gunpowder Falls State Park (410 592-2897).

9. Washington & Old Dominion Trail, Northern VA. Old railroad grade,
paved trail, running through mixed rural habitat. See
www.nvrpa.org/wod.html for information on access and facilities.

10. Gwynna Falls Trail, Baltimore. Wooded streamside trail, paved and
crushed gravel. A separate section close to the Baltimore Beltway
usually has nesting Yellow-crowned Night Herons. For access and
facilities see www.gwynnsfallstrail.org/

11. Wheaton Regional Park, Wheaton, Md. Particularly good for birding
are the areas in and near Brookside Gardens. Parking and facilities at
either the Nature Center or the Garden building, near Randolph Road in
Wheaton. See www.mc-mncppc.org/parks/brookside

We hope you can enjoy some of these places we have traveled.

 Emily Pugsley 
Silver Spring, MD