(NBC NEWS) Despite visions of quaint coops, happy birds and cheap eggs, the growing trend of raising backyard chickens in urban settings is backfiring, critics say, as disillusioned city dwellers dump unwanted fowl on animal shelters and sanctuaries.

Hundreds of chickens, sometimes dozens at a time, are being abandoned each year at the nation’s shelters from California to New York as some hipster farmers discover that hens lay eggs for two years, but can live for a good decade longer, and that actually raising the birds can be noisy, messy, labor-intensive and expensive.

“Many areas with legalized hen-keeping are experiencing more and more of these birds coming in when they’re no longer wanted,” said Paul Shapiro, spokesman for the Humane Society of the United States. “You get some chicks and they’re very cute, but it’s not as though you can throw them out in the yard and not care for them.”

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