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WEDNESDAY, SEPTEMBER 12, 2018
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Bigger Birds Dominate Smaller Birds at Feeding Stations
Wednesday September 12, 2018   |
The Duncraft Nyjer Selective Feeder is an example of a feeder that restricts access to larger birds (and squirrels), allowing access to smaller birds only.

Larger species monopolize the best foods and spend more time foraging than smaller birds at experimental feeding stations in Great Britain, a new study reports. Larger, heavier species including House Sparrows and Greenfinches, get better access to food such as sunflower hearts, which requires less “handling time.” Lighter smaller species must settle for sunflower seeds with the hull intact, which requires more time and energy to open. Smaller species, such as Blue Tits and Coal Tits (Eurasian chickadee species), pecked more rapidly than heavier birds, apparently to better utilize their limited time at the feeders.

The authors note that their information has implications for the millions of people who feed birds and who seek to help conserve them by providing supplemental foods. Although the authors don’t make recommendations, one way to address this concern is to use different types of feeders, including feeders that restrict access to smaller birds only.

Learn more at https://www.sciencedaily.com/releases/2018/09/180905161946.htm


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