These spectacular images show a hummingbird literally bending over backwards to try and fend off a colourful rival that is eyeing the exotic flower it is feeding from.
The two hummingbirds were photographed getting into a flap over the desirable banana flower, which only had perching room for one.
The series of images show the green buff-tailed hummingbird hovering upside down to try and ward off the approaching competitor - a velvet-purple coronet. But despite its best efforts to protect its prize, the buff-tailed hummingbird eventually admits defeat and flits away, leaving the victorious velvet-purple to take its place on the petals of the flower.
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The contest between the vibrantly coloured hummingbirds was captured by photographer Nate Chappell in Mindo, Ecuador - a paradise for tropical birdwatchers.
'The species here are the velvet-purple coronet and the buff-tailed hummingbird, two of the 150 or so species of hummingbirds that occur in Ecuador,' Mr Chappell said.
'When it [the buff-tailed] notices [the approaching velvet-purple] it turns towards him, and then rotates upside-down to defend the flower.'
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But the green bird's defensive manouevres were not sufficient to see off its rival.
'The buff-tailed has moved back to the top of the flower and in the final image he is about to fly away as the velvet-purple has landed on the flower,' said the photographer, who set up the scene to entice hummingbirds to be captured on camera.
'In this instance I placed a banana flower on a clamp and inserted sugar water, the kind used in hummingbird feeders, into it,' he explained.
source: dailymail