WREN

I was surprised to read that the wren is Britain's most common bird. It's certainly one of the most elusive and sightings of it are rare, probably because of its size and pattern of constant movement. 

The poem below was written when given the challenge to write a uni-vocalic poem, that is, one that employs no more than one specific vowel throughout.

An additional requirement was that it should be in the following format: 
Line 1, 1 syllable, Line 2, 2 syllables, Line 3, 3 syllables, Line 4, 4 syllables, Line 5, 10 syllables (the total of the first four lines) and that this format should then be repeated in reverse to conclude the poem. Total syllables 40. 

You'll find the result below.

WREN

See
the wren,
resplendent:
her clever eye,
her sweet essence. Deep, let her sleep be deep;
there, let the green hedge be her perfect bed;
the rye, the reed,
be her screen;
shelter
her.