I hadn't discerned from your original post what you wanted done with STDOUT. To have it sent to parent's STDOUT, you do this in parent.pl: 
$pid = open3(\*WTRFH, '>&STDOUT', \*ERRFH, 'perl child.pl');

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In reply to Re^3: Reading only STDERR by Roy Johnson
in thread Reading only STDERR by nomis80

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