THIRD LETTER IS O

So outside on my lawn there was some snow
The lawn was white and on it there stood a crow
I looked with wonder as he put on a free show
His sweet voice was laboured and a little slow

How did he get there is what I'd like to know 
A slow crow doing a show in some white snow
When he left the lawn it was a devastating blow
For it was very nice to see and gave me a glow 

I regret the opportunity of not taking a photo 
Of this slow crow in the snow putting on a show
In years to come he will be fast and start to grow
How I loved his little performance in the snow