Bred and owned by Jean Ternynck and
trained by Ettiene Pollet in Chantilly, Sea Bird was acknowledged as
a smart juvenile in his native France, although he was overshadowed
by his precocious stable companion Grey Dawn, who had beaten him 2
lengths in the Grand Critérium, now the Prix Jean-Luc Lagardère, at
Longchamp.
However, Sea Bird went from strength to
strength as a three-year-old, starting his campaign with a
comfortable 3-length victory in the Prix Greffulhe, over 1 mile 2½
furlongs, at Longchamp in April. Six weeks later, Sea Bird faced
Cambremont, who had already beaten Grey Dawn in the Poule d’Essai
des Poulains – the French equivalent of the 2,000 Guineas – and
the hitherto unbeaten Diatome in the Prix Lupin over the same course
and distance. He won by 6 lengths, eased down.
Sea Bird started 7/4 favourite for the
Derby at Epsom and, off a generous pace, overhauled the leader, I
Say, with a furlong-and-a-half to run. He was momentarily ridden to
assert his dominance, but was back on the bridle by the time he
crossed the line. Officially, he beat Meadow Court, ridden by Lester
Piggott, by 2 lengths, but the official winning margin by no means
does him justice. If jockey Pat Glennon had committed for home at
Tattenham Corner, as Walter Swinburn did years later, it might be Sea
Bird, rather than Shergar, who holds the record for the longest
winning margin in the history of the Epsom Classic.
Sea Bird next contested the Grand Prix
de Saint-Cloud – which, in those days, was open to three-year-olds
an upwards – and, after pulverising the opposition, was given a
break until the Prix de l’Arc de Triomphe at Longchamp in October.
On that occasion, he lined up against the crème de la crème of
middle distance talent from Europe and North America, including
hitherto unbeaten compatriot Reliance and Preakness Stakes winner Tom
Rolfe. However, even such admirably formidable opposition was no
match for Sea Bird, who powered clear in the closing stages to beat
Reliance by 6 lengths, with Diatome a further 5 lengths away in
third.
Sea Bird was rated 145 by Timeform,
making him the second highest rated horse since World War II, behind
Frankel.