BERLIN — They go to the rescue when others would flee. They are the Schwarmfänger, Berlin’s 30 or so swarm-catchers, on call to collect honeybees by the thousands when they gather where people do not want them.



This year, the Schwarmfänger have been very busy.

While much of the Western world is worried about bees dying off, Berlin and other big German cities have the opposite problem — there are too many hives, because of the rising popularity of urban beekeeping. Shoppers at Berlin’s finer organic stores and public markets are increasingly seeing locally grown honey for sale.

“It’s quite hip at the moment, people put up a hive on their balcony somewhere and think they are doing something for nature,” said Alfred Krajewski, 59, one of the volunteer swarm-catchers.

Many newcomers to beekeeping mistakenly see it as a fairly easy hobby, when in reality they have neither the knowledge nor the time for it. Like anyone who gets fed up with a lousy landlord, the bees leave, turning up in seething clumps under eaves, on lampposts or in backyards — and a call goes out to someone like Mr. Krajewski.