First it's CROWfeather. He knew Breezepelt was Nightcloud's and his but he never knew Jayfeather, Lionblaze, and Hollyleaf were his kits. Though Leafpool tryed to tell him in "We Need to Talk" Not Leafpool's.
The kits are born between series. The last chapter of Firestars quest has it. It doesn't talk about their birth, but it's the first time leafkit and squirrelkit appear
Some great bluetooth car kits are available from Celltech Technologies. They have a wide variety available, including full car kits like the Ego-flash, talk and look. Other car kits such as the R1 and compact classic are a cheaper alternative because they just clip onto your overhead visor.
No, she has kits with fireheart.
Brambleclaw has no kits biologically, since it has been revealed that Squirrelflight did not bear him kits; instead, the kits were her sister Leafpool's. However, his adopted kits (the aforementioned kits) would be Jayfeather, Lionblaze, and Hollyleaf (presumed deceased).
Spiderleg has three kits named Rosepetal, Toadstep, and Daisypetal.
Dovewing and Foxleap do not have kits together, nor become mates.
No, he doesn't have any kits.
Who are Fire Stars kits
Moonflower's kits are Bluestar and Snowfur.
As of yet, Lionblaze has no kits.
No, it's impossible. A she-cat is not ready to have kits until she is around a year old.