The Mistle Thrush had built her nest on top of a downpipe, blocking the water's passage and causing the gutter to flood.
But desperate to protect her young, she puffed herself up to twice her size and sat in the drainpipe to stop the tide of rain water swamping the nest.
She was so occupied with her task that her mate was left to feed her and their young.
The images were captured by amateur wildlife photographer Dennis Bright at a house in Fareham, Hampshire.
Mr Bright said he was astounded by the female bird's behaviour.
"The nest was tucked away from the weather in the shade of the roof but it was so close to the downpipe the gutter flooded when it rained.
"It was only a matter of seconds before the pipe flooded, and water cascaded over the sides."
Mr Bright said he was amazed by the bird's ingenuity.
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