Missing 3rd craw

Delighted to see this bit of street art out at Eskbank, today.
I did have a couple of shots of a female Greater Spotted Woodpecker, but none good enough.
There used to be a 3rd craw on the wa', but it has got broken off, spoiling the hilarious last verse of the song. As I remember, it goes:

3 craws sat upon the wa'
Sat upon the wa'
Sat upon the wa..aw..aw
3 craws sat upon the wa',
On a cold an' frosty mornin'

The first craw wis greetin' on its Maw
Greetin' on its Maw
Greetin' on its Maw..aw..aw
The first craw wis greetin' on its Maw
On a cold an' frosty mornin'

The 2nd craw fell an' broke its jaw
fell an' broke its jaw
fell an' broke its jaw..aw..aw
The 2nd craw fell an' broke its jaw
On a cold an' frosty mornin'

The 3rd craw couldnae flee at a'
couldnae flee at a'
couldnae flee at a'..aw..aw
The 3rd craw couldnae flee at a'
On a cold an' frosty mornin'

The 4th craw wisnae there at a'.