Answer: kieran

AnswerCrossword Clue
KIERANRadio sage.
KIERANHuman encyclopedia of the air.
KIERANMr. Almanac.
KIERANNoted sports writer and bird expert.
KIERANHighly informed author-editor.
KIERANWriter-naturalist John
KIERANJohn of radio's "Information, Please!"