In this poem the wheelbarrow is covered with rain and water ( 'glazed with rain/water).
The red wheelbarrow is symbolic and represents a person in turmoil. A wheelbarrow is a tool that gets a lot of use and abuse on a farm.
The water symbolizes cleansing and purifying. This act of cleaning gives the wheelbarrow hope of a new beginning, a new life.
The white chickens on the wheelbarrow symbolize friends. They are there for the wheelbarrow even during difficult times.