Urbanization and its implications for avian aggression

A case study of urban black kites (Milvus migrans) along Sagami Bay in Japan

Dana M. Galbreath, Tomohiro Ichinose, Tomoyuki Furutani, Wanglin Yan, Hiroyoshi Higuchi

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Urbanization has caused countless changes in the lives, behaviors, and community structures of wild animals. Habitat loss in urban areas has led to the proliferation of certain species over others; in the case of birds, frugivores and certain predators can be found in abundance in cities. These birds, however, occasionally show novel behaviors that can cause stress within human-wildlife interactions. The black kite, Milvus migrans, for example, has displayed a tendency to attack humans for their food in certain urban areas in Japan. In order to determine how habitat availability and land-use types affected these aggressive tendencies, field observations were combined with GIS analysis of five locations along Sagami Bay in Japan. The following locations were assessed according to the amount of each land-use type present and the aggressive tendencies of each location's black kite population: Enoshima, Fujisawa; Kamakura Beach, Kamakura; Zushi Beach, Zushi; Oiso Beach, Oiso; and Iwa Beach, Manazuru. The aggression of each population, designated by the log of the aggression index, was found to be significantly affected by the amount of forest area per black kite, the amount of non-rice-paddy agricultural area per black kite, and the season. Thus, aggression was higher amongst populations with less forested or agricultural area within their foraging zones, and aggression increased during spring, which is the breeding season.

Original languageEnglish
Pages (from-to)169-178
Number of pages10
JournalLandscape Ecology
Volume29
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

aggression
urbanization
beach
Japan
agricultural area
habitat
urban area
land use
agricultural land
bird
black population
habitat availability
habitat loss
breeding season
proliferation
Geographical Information System
community structure
animal
GIS
predator

Keywords

  • Behavior
  • Disturbance
  • GIS
  • Green space
  • Habitat availability
  • Land-use types

ASJC Scopus subject areas

  • Nature and Landscape Conservation
  • Ecology
  • Geography, Planning and Development

Cite this

@article{ed3c5eacb39a4ccba56c012ac8d5ae63,
title = "Urbanization and its implications for avian aggression: A case study of urban black kites (Milvus migrans) along Sagami Bay in Japan",
abstract = "Urbanization has caused countless changes in the lives, behaviors, and community structures of wild animals. Habitat loss in urban areas has led to the proliferation of certain species over others; in the case of birds, frugivores and certain predators can be found in abundance in cities. These birds, however, occasionally show novel behaviors that can cause stress within human-wildlife interactions. The black kite, Milvus migrans, for example, has displayed a tendency to attack humans for their food in certain urban areas in Japan. In order to determine how habitat availability and land-use types affected these aggressive tendencies, field observations were combined with GIS analysis of five locations along Sagami Bay in Japan. The following locations were assessed according to the amount of each land-use type present and the aggressive tendencies of each location's black kite population: Enoshima, Fujisawa; Kamakura Beach, Kamakura; Zushi Beach, Zushi; Oiso Beach, Oiso; and Iwa Beach, Manazuru. The aggression of each population, designated by the log of the aggression index, was found to be significantly affected by the amount of forest area per black kite, the amount of non-rice-paddy agricultural area per black kite, and the season. Thus, aggression was higher amongst populations with less forested or agricultural area within their foraging zones, and aggression increased during spring, which is the breeding season.",
keywords = "Behavior, Disturbance, GIS, Green space, Habitat availability, Land-use types",
author = "Galbreath, {Dana M.} and Tomohiro Ichinose and Tomoyuki Furutani and Wanglin Yan and Hiroyoshi Higuchi",
year = "2014",
doi = "10.1007/s10980-013-9951-4",
language = "English",
volume = "29",
pages = "169--178",
journal = "Landscape Ecology",
issn = "0921-2973",
publisher = "Springer Netherlands",
number = "1",

}

TY - JOUR

T1 - Urbanization and its implications for avian aggression

T2 - A case study of urban black kites (Milvus migrans) along Sagami Bay in Japan

AU - Galbreath, Dana M.

AU - Ichinose, Tomohiro

AU - Furutani, Tomoyuki

AU - Yan, Wanglin

AU - Higuchi, Hiroyoshi

PY - 2014

Y1 - 2014

N2 - Urbanization has caused countless changes in the lives, behaviors, and community structures of wild animals. Habitat loss in urban areas has led to the proliferation of certain species over others; in the case of birds, frugivores and certain predators can be found in abundance in cities. These birds, however, occasionally show novel behaviors that can cause stress within human-wildlife interactions. The black kite, Milvus migrans, for example, has displayed a tendency to attack humans for their food in certain urban areas in Japan. In order to determine how habitat availability and land-use types affected these aggressive tendencies, field observations were combined with GIS analysis of five locations along Sagami Bay in Japan. The following locations were assessed according to the amount of each land-use type present and the aggressive tendencies of each location's black kite population: Enoshima, Fujisawa; Kamakura Beach, Kamakura; Zushi Beach, Zushi; Oiso Beach, Oiso; and Iwa Beach, Manazuru. The aggression of each population, designated by the log of the aggression index, was found to be significantly affected by the amount of forest area per black kite, the amount of non-rice-paddy agricultural area per black kite, and the season. Thus, aggression was higher amongst populations with less forested or agricultural area within their foraging zones, and aggression increased during spring, which is the breeding season.

AB - Urbanization has caused countless changes in the lives, behaviors, and community structures of wild animals. Habitat loss in urban areas has led to the proliferation of certain species over others; in the case of birds, frugivores and certain predators can be found in abundance in cities. These birds, however, occasionally show novel behaviors that can cause stress within human-wildlife interactions. The black kite, Milvus migrans, for example, has displayed a tendency to attack humans for their food in certain urban areas in Japan. In order to determine how habitat availability and land-use types affected these aggressive tendencies, field observations were combined with GIS analysis of five locations along Sagami Bay in Japan. The following locations were assessed according to the amount of each land-use type present and the aggressive tendencies of each location's black kite population: Enoshima, Fujisawa; Kamakura Beach, Kamakura; Zushi Beach, Zushi; Oiso Beach, Oiso; and Iwa Beach, Manazuru. The aggression of each population, designated by the log of the aggression index, was found to be significantly affected by the amount of forest area per black kite, the amount of non-rice-paddy agricultural area per black kite, and the season. Thus, aggression was higher amongst populations with less forested or agricultural area within their foraging zones, and aggression increased during spring, which is the breeding season.

KW - Behavior

KW - Disturbance

KW - GIS

KW - Green space

KW - Habitat availability

KW - Land-use types

UR - http://www.scopus.com/inward/record.url?scp=84893350798&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893350798&partnerID=8YFLogxK

U2 - 10.1007/s10980-013-9951-4

DO - 10.1007/s10980-013-9951-4

M3 - Article

VL - 29

SP - 169

EP - 178

JO - Landscape Ecology

JF - Landscape Ecology

SN - 0921-2973

IS - 1

ER -