It's from a poem. Poetry is not subject to rules in the same way that prose is. The article contains quotations from poems about spring. A visual clue, in a prose article, that a poem is being quoted, is the use of slashes to separate the lines:
Clare writes exactly as he sees: “Lies all his length as dead – and
lets me go / Close bye and never stirs but baking lies, / With legs
stretched out as though he could not rise”
The 10 best poems about spring (the Guardian)
The whole poem:
The spring is coming by a many signs;
The trays are up, the hedges
That fenced the haystack, and the remnant shines
Like some old antique fragment weathered brown.
And where suns peep, in every sheltered place,
The little early buttercups unfold
glittering star or two--till many trace
The edges of the blackthorn
clumps in gold.
And then a little lamb bolts up behind
and wags his tail to meet the yoe*,
And then another, sheltered from
Lies all his length as dead--and lets me go
and never stirs but baking lies,
With legs stretched out as though
he could not rise.
Young Lambs by John Clare
- believed to be a Lincolnshire dialect word meaning 'ewe'.