Swallows In Migration Reading Passage Answers →

All swallow species migrate at altitudes above 3,000 meters.

Radio telemetry / Geolocators / Stable hydrogen isotope analysis (any one). swallows in migration reading passage answers

The swallow is the only bird that migrates to spend summer in northern Europe. (Many other species also arrive then) True/False Swallows are frequently seen in cities. (Rarely encountered in towns/cities; prefer rural areas) True/False Insects, not swallows, appear to predict stormy weather. (Insects fly low in response to barometric pressure) Completion All swallow species migrate at altitudes above 3,000 meters