A little forest bird flew to the beloved woman at the door
It knocked quietly with its bill, with all due decorum
"I have flown so far, amid grief and care
yet quietly and secretly into the beloved one's lap"

"Greetings from my heart, beautiful forest bird!
It drives away my care that you have come
You have flown so far amid grief and danger
I look kindly upon you, with great love"

"I have flown over mountain and valley, amid great trouble
and seeked my love everywhere, worrying she might not be here."
heart's love, if you are there, may the little bird comfort me
Clasp me in your snow-white hands, my heart's love

I'm not surprised you're having difficulties with verse 3. I can't really work out who is speaking. I think the first two lines are by the bird (who seems to be the lover's voice, or even the lover himself), the last two by the lady, addressing her love over the little bird's head, so to speak. I may be wrong, though. The last line might be spoken by the bird again. Slightly confusing, as ancient lyrics are wont to be ...