It's hard to tell... do they have a flower?

maybe hyacinthoides non-scripta ?

I'll take a stab at it being Ornithogallum umbellatum, star of bethleham--can be invasive.

The whiteish stripe on the the leaf looks like it.

Here is a link that might be useful: ornithogallum umbellatum

Amesly,i dont think so. I am still waiting their flower but i dont see any sign till today.
thanks jools and plantknitter. Yes they are very invasive. It spread all over the yard and keeps coming. i want to get rid off it by replace it with lawn but i still wondering if its kind of wild flower or bulbs? i'll check the link.

It does look like Ornithogalum umbellatum. This is my first spring in this garden and I have it coming up all over. Been wondering what it was since January. I finally figured it out with the help of ALJ's Wild Plants of Greater Seattle. It has foliage for a very long time before the flower buds finally emerge. I noticed the small buds for the first time yesterday. If you have anything "spreading weedily" in your garden it will be described in ALJ's book.

schizac, thanks for the information about the books.

couple days ago i saw small buds only on FEW of all those plants. the colour is white-green. cant wait till its bloom...