This bird was in my yard yesterday (briefly) and for a more extended period today Feb 21st in LA. Only just moved here a week ago, so no idea if this bird has even been wintering in the yard. A Feb Lazuli would be rare (not sure how rare...). Indigo is an increasing vagrant to SoCal but again unsure of how many Feb records.
From what I can tell, this bird seems to favor female Indigo as it lacked the warm buffish breast and has a fairly well streaked breast but Indigo is not a bird I see with regularity. Couldn't see any white wingbars either (upper is covered in all the photos I have). Bill doesn't favor Indigo as it's not two-toned but unsure how definitive that feature is. Would need to look for it tomorrow to check if it has a contrasting paler throat.
By now, these birds should have completed a moult and should look more like adults?
Julian's website has been helpful.
Any thoughts either way?