The duck is nesting in landscaping near a drive-thru menu at a Chick-fil-A in Audubon.
Restaurant employee Karen Montone said Thursday that she noticed the duck a couple of days ago. Gardeners had recently replanted the area bordering the store in a suburban strip mall.
Montone thinks the duck had been hidden beneath old plants but is now exposed by the new landscaping. She's worried the fowl is too far afoul of its natural environment and has placed water and food nearby.
It's not clear how many eggs the duck has or when they might hatch.