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This daffodil is one of many bred by the plantswoman Sarah Backhouse.

"It's a choreographed dance," explained lead author Fiona Backhouse, a postdoctoral researcher with the Cornell Lab of Ornithology.

"Albert's Lyrebirds are actually moving the structure while they're singing so it becomes an active part of their performance," said Backhouse.

"One possibility for why they do this vine-shaking is that it enhances their display, making the male look bigger and more vigorous by creating an impressive spectacle for a watching female," said Backhouse.

Backhouse hopes to collect more footage, documenting what happens when female birds are watching and whether that changes the performance in any way.