Consumer advocate Choice lined up a panel of four food experts to taste eight different roast chickens – two organic, two free-range, one corn-fed and three regular factory-farmed birds.
But despite the higher cost of free-range, corn-fed and organic chickens, the experts could not tell the difference in taste.
"While there were no significant differences in their scores, all agreed chickens don't have as much taste as they used to," said a statement from Choice.
"Our advice is that buying organic or free-range might have other important benefits, such as the birds having a better life, but it doesn't necessarily mean a tastier roast dinner," said spokesman Christopher Zinn.
"The cook makes much more difference than the way the chicken is raised."
Choice said that since the 1960s, the time it takes to produce a two kilogram chicken has almost halved to around 40 days from 70 days with the exception to this being the organic standard, which specifies that organic meat chicken must be grown to maturity over a period of 63 to 70 days.
The consumer group's advice to find a chicken with real flavour was to find a smaller producer who uses traditional breeds and lets the chickens live longer or buy the largest chicken you can find, as the bigger it is then longer it has lived and the flavour is likely to be better.
Organic or battery farmed chickens – what do do you prefer?