Possible Clues:

• One of the 29 across sounds as if he might be in the zoo
• One with the hives?
• 23 accepts alarm call from one working in the colonies
• Has-been? There may be a buzz about him
• Honey collector
• Comb tender and smoke sprayer?
• Insect owner using a smoker
• What Sherlock Holmes became in retirement
• One harvesting honey, perhaps bitter about English preserve
• One who deals with a hive of activity