1. The fall of the snowflakes signals the coming of winter.
2. No. It symbolizes peace & gentleness. Itís a peace emblem.
3. Yes. Very often.
4. A squirrel does bark. The lyric refers to squirrel and not bird. ĎCallí here means shout, cry, a sound signal & etc. I suppose you could say "hear their call (or bark) of love".