Birds' migratory compasses revealed
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How do migrating birds know where they're going?
76% Informative
Birds use a variety of cues to keep their migratory direction.
Sight and smell are two basic cues that birds use to find their way.
Birds that migrate during the day use a "sun compass," which combines birds' view of where the sun is in the sky with their internal perception of what time of day it is based on their circadian rhythm.
Birds also can use the sun and stars as guides, partly thanks to magnetoreception, which allows birds to perceive Earth 's magnetic fields.
Birds likely integrate their compass cues to navigate, Liedvogel said.
Magnetoreception is less useful during thunderstorms or periods of high solar activity, Hore said.
Relocating or rewilding bird species has become a major focus of wildlife conservation efforts.
Both scientists said understanding these systems will be essential to bird conservation.
VR Score
90
Informative language
96
Neutral language
53
Article tone
informal
Language
English
Language complexity
48
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not offensive
Hate speech
not hateful
Attention-grabbing headline
not detected
Known propaganda techniques
not detected
Time-value
long-living
External references
10
Source diversity
10
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5