Seasonal differences in escape behaviour in the urban hooded crow, Corvus cornix

Title:

Seasonal differences in escape behaviour in the urban hooded crow, Corvus cornix

Creator:

Novčić, Ivana and Parača, Vanja

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:87f4c05b-4179-431e-86fa-a325cb6100c7
uuid:87f4c05b-4179-431e-86fa-a325cb6100c7
doi:10.25225/jvb.21066

Subject:

flight initiation distance, distance fled, escape method, breeding season, and crows

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

This study examined escape behaviour of hooded crows, Corvus cornix, in an urban environment, in Belgrade, Serbia, with the goal of assessing the effect of breeding season on components of escape behaviour; flight initiation distance (FID), distance fled (DF), and escape method (flying vs. running/walking). Using GLMMs, it was shown that FID was longer during the breeding season, and increased with alert distance. DF was significantly influenced by escape method, with birds escaping for distances greater than 10 m more often when flying, whereas escape method itself was significantly influenced by FID, with birds escaping more often by flying at greater distances from an approaching predator. The majority of individuals (78%) fled for distances < 10 m after initiating escape, and escaped by walking or running (67%). Our results show that hooded crows, although adapted to living in highly urbanized environments, may be more risk-averse during the breeding season, which may allow them to more successfully take care of their young.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

1-10

Source:

Journal of Vertebrate Biology | 2022 Volume:71 | Number:1

Harvested from:

CDK

Metadata only:

false