Many trends fade away over the years while some remain relevant. I am curious if there is a consistent opinion relating to birth month, and how that might relate to timing of development between 2yo to 3yo. Several years ago I grabbed this data (admittedly not mine, I think from someone on this board) and am wondering how it could be a factor for TG development in early May.

Obviously form cycle and TG numbers are primary, but is this a bias that should be applied or considered?

34% of Derby winners were born in January (7% of thoroughbreds born in that month)
24% of Derby winners were born in February (14% of thoroughbreds born in that month)
22% of Derby winners were born in March (27% of thoroughbreds born in that month)
12% of Derby winners were born in April (31% of thoroughbreds born in that month)
8% of Derby winners were born in May (17% of thoroughbreds born in that month)

Known 22-Mar
Like 13-Feb
Brooklyn 20-Jan
Keep 8-Feb
Saint 15-May
Besos 4-Mar
Mandaloun 18-Mar
Medina 5-Apr
Hot Rod 11-Apr
Midnight 25-Jan
Dynamic 2-Feb
Helium 1-Apr
Hidden 15-Mar
Essential 9-Apr
Rock 28-Feb
King 12-Jan
Highly 23-Mar
Super Stock 12-Apr
Soup 30-Mar
Bourbonic 7-Apr