Hi BYC,
I am thinking of getting some day old chicks from online hatcheries, because I don't have any nearby hatcheries. I live in Cupertino and would like chicks somewhere near spring. The problem is, I don't want 15 chicks or 25 chicks (usual minimum of online shipping) and shipping for small quantity chick offers are ridiculously high.....
There is a trade off between ordering a large number of early season day old chicks and shipping a small number of day old chicks. This trade off is the number of chicks that will invariable perish from cold when shipped in small orders.
So if your planning on ordering early chicks through the US Mail, and it seems from your post that you do plan on ordering early chicks, save yourself the headaches and heart aches and have the hatchery ship your early chicks prepacked in a bottle of formaldehyde. At least your chicks will last longer and arrive in better condition when packed that way. Sorry for the blunt language but the chicks won't mind.
They OP stated they were in Cupertino, if they order from a west coast hatchery or other close warm area come spring changes are slim the chicks will be exposed to any 'cold' weather that would result in imminent death... In fact one could argue the spring orders are better in that area vs risking summer heat...