Free-range egg prices have risen over the past 12 months due to egg shortages driven partly by bird flu but chiefly by farmers quitting because of poor prices from retailers, he added.
A major concern for wildlife is that the easing comes as seabirds return en masse to the UK coast to nest.
"The problem has certainly not gone away for wild birds," RSPB director of advocacy and policy Jeff Knott told BBC News.