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The Crested Ibises expanding to plain areas exhibit a higher tolerance of human proximity

Avian Research 2024年第1期15卷 60-65页

作者： Yuqi Zou Yiting Jiang Zitan Song Xiaobin Fang Changqing Ding School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing100083China Department of Biology University of KonstanzKonstanz78464Germany Center for the Advanced Study of Collective behavior University of KonstanzKonstanz78464Germany School of Life Sciences Liaoning UniversityShenyang110036China Comparative Socioecology Group Max Planck Institute for Animal BehaviorKonstanz78467Germany

Animals must strike a balance between anti-predation behavior and other essential behaviors,such as *** the same species,strategies may vary on individuals’risk-taking preferences,and in this process the environment is a determinant,in addition to predator *** Crested Ibis(Nipponia nippon)exhibits such *** is an endangered species,once inhabiting exclusively in China’s Qinling *** used to be the sole remaining wild ***,over recent decades,this population has expanded.A portion has relocated to breed in the lower plain area,which is characterized by elevated level of human activities and landscape *** used flight initiation distance(FID)as an indicator of the ibises’risk-taking preference,particularly their response to human ***,we examined the environmental factors influencing their foraging site selection,including altitude,terrain openness,human activity intensity and human *** findings revealed a significantly shorter FID among individuals relocating to plain habitats,indicating a higher tolerance of human *** results showed that FID decreased with distance to the nearest human *** finding is that FID was independent of instant human activity intensity and environmental factors(altitude and terrain openness).These different may arise from various combinations of human activity,predation risk,and food abundance within the two *** results provide insights into the in situ conservation of the threatened species within the context of global urbanization.

关键词： anti-predation behavior Flight initiation distance Habitat expansion Human activity Nipponia nippon

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Do nocturnal birds use acoustic and visual cues to avoid predation by bats?

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Integrative Zoology 2024年第3期19卷 524-537页

作者： Lixin GONG Huan WU Zhiqiang WANG Hui WU Jiang FENG Tinglei JIANG Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization Northeast Normal UniversityChangchunChina Key Laboratory of Vegetation Ecology of Education Ministry Institute of Grassland ScienceNortheast Normal UniversityChangchunChina College of Life Science Jilin Agricultural UniversityChangchunChina

anti-predation strategies are critical to animal survival and are fundamental to deciphering predator–prey *** an important defense strategy,sensory predator detection(such as through acoustic and visual cues)enables animals to assess predation risk and execute predator-avoidance behavior;however,there are limited studies on the anti-predation behavior of nocturnal *** prey of bats provides an excellent representative system for examining the anti-predation behavior of nocturnal ***,we broadcasted different types of echolocation calls of the bird-eating bat Ia io to two wild passerine birds,namely,Zosterops japonicus and Sinosuthora webbiana,that are preyed upon by ***,and presented the birds with individual bats under different light *** results showed that both bird species were able to perceive the low-frequency audible portion of the bats’echolocation calls;however,they did not exhibit escape responses to the acoustic *** the dark and under moonlit conditions,both bird species were unable to respond to active bats at close range and the birds only exhibited evasive flight behavior when bats approached or touched *** results suggest that nocturnal passerine birds may not be able to use acoustic or visual cues to detect bats and adopt evasive maneuvers to avoid *** work suggests that bat predation pressure may not elicit primary predator-avoidance responses in nocturnal passerine *** results provide new insights into the anti-predation behavior of nocturnal animals.

关键词： anti-predation behavior nocturnal animals sensory cues sensory defenses

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