What visual sign indicates that a feeder placed in the sun is spoiling too quickly?

Answer

Nectar looking cloudy or showing any visible signs of mold.

Cloudiness and mold formation are direct indicators that microbial growth is accelerating, usually due to temperatures that are too high for the sugar solution.

What visual sign indicates that a feeder placed in the sun is spoiling too quickly?

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how to position your Hummingbird Feeder for the best results

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