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首页> 外文期刊>Southeastern naturalist >Activity of Post-fledging Peregrine Falcons in Different Rearing and Habitat Conditions
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Activity of Post-fledging Peregrine Falcons in Different Rearing and Habitat Conditions

机译：在不同的饲养和生境条件下，后游的游eg猎鹰的活动

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To assist with recovery of Falco peregrinus (Peregrine Falcon) in the southeastern United States, we compared pre-dispersal activity budgets between falcons reintroduced at sites chosen for their contrasting habitats (agriculture vs forest). We also compared behavior of our hacked birds with nearby wild-produced juveniles. We classified pre-dispersal behavior into nine activities depicting flight and non-flight. We logged 901 hr of observation and found that wild-produced falcons spent more time in low flight, soaring, and mock combat during a 4-wk post-fledging period (mean +/- 95% Cl) than hacked birds. Peregrine Falcons hacked in mixed agricultural habitat spent more time soaring and perching alertly than those hacked in forest habitat; falcons in forest habitat perched inactively with higher frequency. Dispersal time (mean +/- SD) differed among groups (F-2,F-31 = 11.4, P < 0.001). Falcons hacked in forest habitat spent 15.2 +/- 12.2 days on the post-fledging areas before dispersing, whereas those hacked in agricultural habitat spent 31.0 +/- 3.3 days and wild-produced birds spent 35.9 +/- 10.1 days. It appeared that transitional habitat supporting available prey and the presence of adults during the post-fledging period were important in the expression of key behavior repertoires including hunting, defense, and social flight activity. Our results suggest that further recovery of the Peregrine Falcon in the southeastern United States would be poorly served by additional hacking, particularly in forest habitat. Rather, managers should continue to monitor and encourage productivity in existing occupied habitat; eventually offspring from occupied habitat may occupy adjacent habitats.
机译：为了帮助美国东南部的游per（Peregrine Falcon）的恢复，我们比较了在因栖息地不同而选择的地点（农业与森林）重新引入的猎鹰之间的传播前活动预算。我们还比较了被砍下的鸟类与附近野生产生的幼虫的行为。我们将分散前的行为分为描述飞行和非飞行的九种活动。我们记录了901 hr的观察时间，发现野生产的猎鹰在出雏后4周内（平均+/- 95％Cl）在低速飞行，高空飞行和模拟战斗中花费的时间比砍下的鸟类要多。与在森林栖息地砍伐的猎鹰相比，在混合农业栖息地砍伐的游eg猎鹰花的时间更多，因此他们在警戒和so翔中花费的时间更多。森林栖息地中的猎鹰栖息频率较高。各组之间的分散时间（平均值+/- SD）不同（F-2，F-31 = 11.4，P <0.001）。砍伐森林栖息地的猎鹰在迁徙后的后迁徙区花费了15.2 +/- 12.2天，而砍伐农业栖息地的猎鹰则花费了31.0 +/- 3.3天，而野生鸟类则花费了35.9 +/- 10.1天。看来，过渡后的栖息地在成年后的时期内支持可用的猎物和成年动物，在表达包括狩猎，防御和社交飞行活动在内的关键行为方式方面很重要。我们的结果表明，在美国东南部的百富勤猎鹰的进一步恢复将很难通过额外的砍伐来实现，特别是在森林栖息地中。相反，管理人员应继续监测和鼓励现有居住栖息地的生产力;最终，被占领栖息地的后代可能会占据邻近的栖息地。

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