"It's incredibly energy-intensive and the birds use up to 50% of their body mass," he says.
for (const auto &seg : segments) {
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（二）发现、阻断干扰、侵入、攻击、破坏网络服务设施等危害网络安全的行为；
The Natterer's come out a little later, preferring to exit through small holes in the roof to get outside and find food.