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May 22, 2019 · In Michigan, females incubated about 70% of daylight hours when temperatures were near normal (about 21°C), and increased nest attentiveness when temperatures dropped (Allen and Nice 1952). Off-bouts by females usually lasted 5–12 min (up to 35 min) in Michigan, and averaged 9.3 min in Ohio (Allen and Nice 1952). ................
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