The feeding frequency of five bird species in the morning with photographers absent (grey column) and present (blue column). (IMAGE)

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The feeding frequency of five bird species in the morning with photographers absent (grey column) and present (blue column).

Caption

The feeding frequency of five bird species in the morning with photographers absent (grey column) and present (blue column).

Credit

Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi University, China.

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License

CC BY-NC-ND

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