Nature can be harsh and unforgiving; so, too, can nature writing.

On March 15, the National Audubon Society suspended a longtime magazine columnist and bird lover after he wrote a column for another publication identifying Tylenol as an effective poison for feral cats. After a 10-day dispute that drew in parts of the journalism and wildlife communities, the society on Tuesday reinstated Ted Williams, a freelance writer for the society for the last 33 years, and said that his column would return in the magazine’s July-August issue.

David Yarnold, president and chief executive of the National Audubon Society, announced in a statement that the society did not find a “larger pattern of missteps that would warrant further disciplinary action.” Mr. Williams apologized on Audubon’s Web site on Tuesday, calling his reference to Tylenol “irresponsible.”

His original column, which ran in The Orlando Sentinel, thrust Mr. Williams directly into the long-simmering feud between bird lovers and cat lovers. Cats, both domesticated and feral, have been identified as the chief threat to birds: a recent analysis from the Smithsonian Conservation Biology Institute and the Fish and Wildlife Service estimated that cats kill an average of 2.4 billion birds in the continental United States every year.

Mr. Yarnold said Mr. Williams’s comments in his column did not reflect the views of the Audubon Society.