Abstract：
:It is widely accepted that stationary prey are able to carefully assess the risk levels associated with an approaching predator to make informative decisions on when to escape. However, little is known about subsequent decision-making process. We set out to compare whether escape durations of three species of corvids differ depending on how a human observer (in the role of a predator) behaves after the escape has begun. When birds were being followed during escape, escape durations were the longest, escape trajectory was modified the most during escape, and a larger proportion of individuals changed from terrestrial to aerial escape strategy compared to observations where birds were not followed. Mean horizontal escape angle of ca 120° was also a potential indication that monitoring the threat is taken into account when deciding on the escape trajectory. While there were some differences between the behaviour of these three closely related species, the general patterns supported the notion that birds dynamically assess risk during escape to find an optimal balance between getting caught and spending too much time and energy on escaping. Further research using different predator-prey combinations or making comparisons between habitats could help understand the generality of our results.
journal_name
Behav Processesjournal_title
Behavioural processesauthors
Tätte K,Møller AP,Mänd Rdoi
10.1016/j.beproc.2019.104017subject
Has Abstractpub_date
2020-01-01 00:00:00pages
104017eissn
0376-6357issn
1872-8308pii
S0376-6357(19)30346-8journal_volume
170pub_type
杂志文章abstract：:The effects of d-amphetamine on pigeons' key-pecking under the peak interval (PI) procedure were investigated in two experiments. In experiment I the effects of doses of d-amphetamine from 0.75 to 3.0 mg/kg on responding under PI 30 and 45 s were studied for 10 successive days. Reductions in peak time and wait time we...
journal_title：Behavioural processes
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journal_title：Behavioural processes
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journal_title：Behavioural processes
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journal_title：Behavioural processes
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journal_title：Behavioural processes
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journal_title：Behavioural processes
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journal_title：Behavioural processes
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journal_title：Behavioural processes
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