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Swooping in the Suburbs; Parental Defence of an Abundant Aggressive Urban Bird against Humans.

Lees D, Sherman CD, Maguire GS, Dann P, Cardilini AP, Weston MA - Animals (Basel) (2013)

Bottom Line: This study examined whether defensive responses differed when nesting birds were confronted with different human stimuli ('pedestrian alone' vs. 'person pushing a lawn mower' approaches to nests) and tested the effectiveness of a commonly used deterrent (mock eyes positioned on the top or back of a person's head) on the defensive response.Masked Lapwings did not swoop closer to a person with a lawn mower compared with a pedestrian, but flushed closer and remained closer to the nest in the presence of a lawn mower.The presence of eye stickers decreased (pedestrians) and increased (lawn mowers) swooping behaviour.

View Article: PubMed Central - PubMed

Affiliation: Centre for Integrative Ecology, Faculty of Science, Engineering and the Built Environment, Deakin University, 75 Pigdons Rd., Waurn Ponds, VIC 3216, Australia. lees.danielt@y7mail.com.

ABSTRACT
Masked Lapwings, Vanellus miles, often come into 'conflict' with humans, because they often breed in close proximity to humans and actively defend their ground nests through aggressive behaviour, which typically involves swooping. This study examined whether defensive responses differed when nesting birds were confronted with different human stimuli ('pedestrian alone' vs. 'person pushing a lawn mower' approaches to nests) and tested the effectiveness of a commonly used deterrent (mock eyes positioned on the top or back of a person's head) on the defensive response. Masked Lapwings did not swoop closer to a person with a lawn mower compared with a pedestrian, but flushed closer and remained closer to the nest in the presence of a lawn mower. The presence of eye stickers decreased (pedestrians) and increased (lawn mowers) swooping behaviour. Masked Lapwings can discriminate between different human activities and adjust their defensive behaviour accordingly. We also conclude that the use of eye stickers is an effective method to mitigate the human-lapwing 'conflict' in some, but not all, circumstances.

No MeSH data available.


Related in: MedlinePlus

Means and one standard error of ‘low swooping and calling’ values against treatment type (the significant interaction between mower/pedestrian and eyes/no eyes; see Table 3). Means show the significant increase in mean ‘low swooping and calling’ values evoked by mowers with eye stickers when compared to mowers without eye stickers and the significant decrease in mean ‘low swooping and calling’ values when pedestrians without eye stickers are compared to pedestrians with eye stickers.
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animals-03-00754-f001: Means and one standard error of ‘low swooping and calling’ values against treatment type (the significant interaction between mower/pedestrian and eyes/no eyes; see Table 3). Means show the significant increase in mean ‘low swooping and calling’ values evoked by mowers with eye stickers when compared to mowers without eye stickers and the significant decrease in mean ‘low swooping and calling’ values when pedestrians without eye stickers are compared to pedestrians with eye stickers.

Mentions: The presence of a lawn mower and the presence of eye stickers had no significant effect on ‘low swooping and calling’ or ‘high swooping’; however, there was a significant relationship between ‘separation’ and the presence of a lawn mower. Lawn mowers caused lapwings to flush earlier from the nest and remain further away from the stimulus. There was also a significant relationship between ‘low swooping and calling’ and the interaction between the presence of a lawn mower and the presence of eye stickers (Table 3; Figure 1). Thus, lapwings can discriminate between different human activities and adjust their defensive behaviour in regard to the perceived level of risk. Additionally, the use of eye stickers appears to be an effective method to mitigate the aggressive parental defence for pedestrians; however, eye stickers actually increase aggression directed towards those mowing lawns.


Swooping in the Suburbs; Parental Defence of an Abundant Aggressive Urban Bird against Humans.

Lees D, Sherman CD, Maguire GS, Dann P, Cardilini AP, Weston MA - Animals (Basel) (2013)

Means and one standard error of ‘low swooping and calling’ values against treatment type (the significant interaction between mower/pedestrian and eyes/no eyes; see Table 3). Means show the significant increase in mean ‘low swooping and calling’ values evoked by mowers with eye stickers when compared to mowers without eye stickers and the significant decrease in mean ‘low swooping and calling’ values when pedestrians without eye stickers are compared to pedestrians with eye stickers.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494437&req=5

animals-03-00754-f001: Means and one standard error of ‘low swooping and calling’ values against treatment type (the significant interaction between mower/pedestrian and eyes/no eyes; see Table 3). Means show the significant increase in mean ‘low swooping and calling’ values evoked by mowers with eye stickers when compared to mowers without eye stickers and the significant decrease in mean ‘low swooping and calling’ values when pedestrians without eye stickers are compared to pedestrians with eye stickers.
Mentions: The presence of a lawn mower and the presence of eye stickers had no significant effect on ‘low swooping and calling’ or ‘high swooping’; however, there was a significant relationship between ‘separation’ and the presence of a lawn mower. Lawn mowers caused lapwings to flush earlier from the nest and remain further away from the stimulus. There was also a significant relationship between ‘low swooping and calling’ and the interaction between the presence of a lawn mower and the presence of eye stickers (Table 3; Figure 1). Thus, lapwings can discriminate between different human activities and adjust their defensive behaviour in regard to the perceived level of risk. Additionally, the use of eye stickers appears to be an effective method to mitigate the aggressive parental defence for pedestrians; however, eye stickers actually increase aggression directed towards those mowing lawns.

Bottom Line: This study examined whether defensive responses differed when nesting birds were confronted with different human stimuli ('pedestrian alone' vs. 'person pushing a lawn mower' approaches to nests) and tested the effectiveness of a commonly used deterrent (mock eyes positioned on the top or back of a person's head) on the defensive response.Masked Lapwings did not swoop closer to a person with a lawn mower compared with a pedestrian, but flushed closer and remained closer to the nest in the presence of a lawn mower.The presence of eye stickers decreased (pedestrians) and increased (lawn mowers) swooping behaviour.

View Article: PubMed Central - PubMed

Affiliation: Centre for Integrative Ecology, Faculty of Science, Engineering and the Built Environment, Deakin University, 75 Pigdons Rd., Waurn Ponds, VIC 3216, Australia. lees.danielt@y7mail.com.

ABSTRACT
Masked Lapwings, Vanellus miles, often come into 'conflict' with humans, because they often breed in close proximity to humans and actively defend their ground nests through aggressive behaviour, which typically involves swooping. This study examined whether defensive responses differed when nesting birds were confronted with different human stimuli ('pedestrian alone' vs. 'person pushing a lawn mower' approaches to nests) and tested the effectiveness of a commonly used deterrent (mock eyes positioned on the top or back of a person's head) on the defensive response. Masked Lapwings did not swoop closer to a person with a lawn mower compared with a pedestrian, but flushed closer and remained closer to the nest in the presence of a lawn mower. The presence of eye stickers decreased (pedestrians) and increased (lawn mowers) swooping behaviour. Masked Lapwings can discriminate between different human activities and adjust their defensive behaviour accordingly. We also conclude that the use of eye stickers is an effective method to mitigate the human-lapwing 'conflict' in some, but not all, circumstances.

No MeSH data available.


Related in: MedlinePlus