anchor.diff:  "961","STEVE LESLEY","unknown","hen","3/23",866.7,"YOUNG BIRD"
   "962","STEVE LESLEY","unknown","hen","4/23",866.7,"YOUNG BIRD"
   "963","Jerry King","complex","cock","7/30",864,"YOUNG BIRD"
  -"964","RIGHT WING /5","blue bar","hen","119.459",862.4,"YOUNG BIRD"
  +"964","RIGHT WING","blue bar","hen","119.459",862.4,"YOUNG BIRD"
   "965","Jack Chavis","complex","cock","4/20",860.5,"YOUNG BIRD"
   "966","Journeys End","blue bar","cock","5/22",859.9,"YOUNG BIRD"
   "967","RICK TOM","complex","cock","2/12",858.3,"YOUNG BIRD"
  
positive.code: "736","BRAD SANTOS","red check","hen","6/33",1184,"YOUNG BIRD"
  "737","BRAD SANTOS","complex","cock","7/33",1184,"YOUNG BIRD"
  "738","BRAD SANTOS","blue bar","hen","8/33",1183.9,"YOUNG BIRD"
  "739","BOB GLASS /14","blue bar","cock","113.014",1182.9,"YOUNG BIRD"
  "740","BOB GLASS","blue bar","cock","2/14",1182.1,"YOUNG BIRD"
  "741","BOB GLASS","complex","cock","3/14",1181.3,"YOUNG BIRD"
  "742","IBUKI BROS/16","blue bar","cock","126.317",1180.3,"YOUNG BIRD"
  "743","FLORIN POTRA","blue bar","hen","7/26",1179,"YOUNG BIRD"
  "744","FLORIN POTRA","complex","hen","8/26",1178.4,"YOUNG BIRD"
  "745","FLORIN POTRA","complex","hen","9/26",1177.4,"YOUNG BIRD"
  "746","Jack Chavis/7","complex","hen","109.722",1177,"YOUNG BIRD"
  "747","FLORIN POTRA","complex","hen","10/26",1177,"YOUNG BIRD"
  "748","Jack Chavis","complex","hen","2/7",1176.2,"YOUNG BIRD"
  "749","FLORIN POTRA","complex","hen","11/26",1173.3,"YOUNG BIRD"
  
negative.code: "2307","DH SKY KING L","complex","cock","15-Jul",983.1,"OLD BIRD"
  "2308","DH SKY KING L","unknown","cock","15-Jun",984,"OLD BIRD"
  "2309","DH SKY KING L","unknown","cock","15-May",985.3,"OLD BIRD"
  "2310","DH FLYN CHR","unknown","cock","102.263",1174.4,"OLD BIRD"
  "2311","DH GARCIA LOF","complex","cock","5-Feb",1200.8,"OLD BIRD"
  "2312","DH HERNANDE","unknown","cock","151.224",1048.7,"OLD BIRD"
  "2313","DH MAD MALT","unknown","hen","104.451",1014,"OLD BIRD"
  "2314","DH D STARNES","unknown","unknown","5-Mar",1056.1,"OLD BIRD"
  "2315","DH D STARNES","blue check","hen","5-Feb",1056.2,"OLD BIRD"
  "2316","DH RUIZ LOF","unknown","hen","145.522",1056.4,"OLD BIRD"
  "2317","DH BIG DADD","complex","cock","143.143",1331.2,"OLD BIRD"
  "2318","DH FLYN CHR","unknown","hen","115.621",1036.6,"OLD BIRD"
  "2319","DH SAMMY BANK","blue bar","cock","5-Apr",1063.7,"OLD BIRD"
  "2320","DH LOUIS LO","unknown","hen","109.023",1223.7,"OLD BIRD"
  "2321","DH CUEVAS L","unknown","hen","168.822",1020.6,"OLD BIRD"
  "2322","DH 71ST AIR","unknown","hen","155.886",1017.7,"OLD BIRD"
  "2323","DH D STARNE","blue check","hen","150.598",1070.8,"OLD BIRD"
  "2324","DH STAN BELL","complex","hen","5-Feb",1023.7,"OLD BIRD"
  "2325","DH SKY KING L","unknown","hen","15-Apr",1019.3,"OLD BIRD"
  "2326","DH FLYN TIG","unknown","hen","116.536",1056.3,"OLD BIRD"
  "2327","DH STAN BEL","complex","cock","169.424",1031.7,"OLD BIRD"
  "2328","DH SAMMY BA","complex","hen","154.317",1026.9,"OLD BIRD"
  "2329","DH SCORPION","unknown","cock","140.192",1021.7,"OLD BIRD"
  "2330","DH SAMMY BA","blue bar","hen","92.808",1238.4,"OLD BIRD"
  "2331","DH STAN BEL","unknown","hen","136.014",1078.5,"OLD BIRD"
  "2332","DH JIMENEZ LO","unknown","hen","5-Feb",1262.5,"OLD BIRD"
  "2333","DH RUIZ LOF","dark check","cock","80.545",1252.5,"OLD BIRD"
  "2334","DH SAMMY BANK","blue bar","cock","5-Mar",1103.3,"OLD BIRD"
  "2335","DH SCORPION","blue bar","hen","148.262",1102.6,"OLD BIRD"
  "2336","DH LOUIS LOPE","unknown","cock","5-Feb",1044.4,"OLD BIRD"
  "2337","DH LOUIS LO","unknown","cock","146.785",1044.5,"OLD BIRD"
  "2338","DH SAMMY BANK","blue bar","cock","5-Feb",1106.4,"OLD BIRD"
  "2339","DH JIMENEZ","unknown","cock","97.523",1304.8,"OLD BIRD"
  "2340","DH BLUE DUCK","unknown","cock","5-Feb",1107.7,"OLD BIRD"
  "2341","DH BLUE DUC","unknown","cock","132.125",1131.6,"OLD BIRD"
  "2342","DH SCORPION","unknown","cock","159.447",1192.4,"OLD BIRD"
  "2343","DH BUDDY GR","unknown","hen","155.728",539,"OLD BIRD"
  "2344","DH SKY KING L","complex","cock","5-Mar",1089.5,"OLD BIRD"
  "2345","DH STAN BEL","unknown","hen","83.865",714.4,"OLD BIRD"
  "2346","DH FRANKIES","unknown","hen","82.76",841.9,"OLD BIRD"
  "2347","DH SAMMY BA","complex","hen","145.498",1101.7,"OLD BIRD"
  "2348","DH D STARNE","blue bar","hen","106.947",1398.6,"OLD BIRD"
  "2349","DH SAMMY BA","complex","cock","152.962",1154.5,"OLD BIRD"
  "2350","DH MONTAGNO","unknown","hen","174.906",1199.1,"OLD BIRD"
  "2351","DH MONTAGNO","unknown","hen","160.722",1493.4,"OLD BIRD"
  "2352","DH SKY KING","complex","cock","146.839",1090.6,"OLD BIRD"
  "2353","DH SKY KING L","complex","hen","5-Feb",1090.6,"OLD BIRD"
  "2354","Rawhide","blue bar","cock","574",1550.3,"YOUNG BIRD"
  "2355","GREENDAY","blue bar","cock","586",1543.3,"YOUNG BIRD"
  