Bernardo Waterfowl Area is a 5.8 mile loop trail located near La Joya, NM. The trail is good for all skill levels and primarily used for hiking.
This is actually an area where most people drive through but there are two short trails off the road and I would recommend walking the loop instead of driving. It is flat and easy (Take a Camera) -- December and January provide the best bird viewing months. Dirt Road that is flat.
I really enjoy this area. It has good bird viewing without the crowds and you are able to be closer to the birds here, so you can get better pictures even with a nominal camera.