SCIENCE
Markle, Sandra

Snowy Owl Invasion!: Tracking an Unusual Migration

(3) 4-6 In 2013, an irruption (sudden increase) of snowy owl sightings in southern Canada and the U.S.--far south of their normal summer home--prompted studies of their migration behavior. Markle's clear prose describes the research of Project SNOWstorm, which tracked snowy owls and collected data with GPS transmitters. Illustrative field photos help middle-grade readers follow the scientific investigation. Reading list, websites. Glos., ind.

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