Does predation pressure drive heronry birds to nest in the urban landscape?
Predation is an important selective force that determines breeding success in all animals. Animals adopt a range of antipredatory strategies to overcome predation pressure in the breeding site, which is also a major predation ground. Birds mitigate this pressure through parental care, colonial or gr...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-06-01
|
| Series: | Journal of Asia-Pacific Biodiversity |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2287884X18304096 |
| _version_ | 1823934525155049472 |
|---|---|
| author | Ramesh Roshnath Kunjikandi Athira Palatty Allesh Sinu |
| author_facet | Ramesh Roshnath Kunjikandi Athira Palatty Allesh Sinu |
| author_sort | Ramesh Roshnath |
| collection | DOAJ |
| description | Predation is an important selective force that determines breeding success in all animals. Animals adopt a range of antipredatory strategies to overcome predation pressure in the breeding site, which is also a major predation ground. Birds mitigate this pressure through parental care, colonial or group nesting, and selecting habitats that are predicted to hold less number and diversity of predators. Heronry birds' increasing use of urban habitats for breeding has been suggested as a measure to avoid predation pressure, despite quantitative support for this argument is lacking. We tested this hypothesis by comparing diversity, abundance, and frequency of predation attempts of birds of prey on heronries of wild (mangrove forest) and urban habitats. The house crow (Corvus splendens), brahminy kite (Haliastur indus), and black kite (Milvus migrans) were the major birds of preys in mangrove forests and urban areas. The predators partitioned the nest resources; the kites preyed the chicks, and the crows preyed the eggs. The abundance of avian predators and the frequency of successful predation of eggs and chicks were significantly lower in urban heronries compared with mangroves. Our results suggest that predation might be a reason for the birds to switch to urban habitats for breeding. Keywords: Breeding, Heronry, House crow, Predation, Urban ecosystem |
| first_indexed | 2024-12-16T22:21:25Z |
| format | Article |
| id | doaj.art-c870d70072d743c39e9e54af711e3962 |
| institution | Directory Open Access Journal |
| issn | 2287-884X |
| language | English |
| last_indexed | 2024-12-16T22:21:25Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Asia-Pacific Biodiversity |
| spelling | doaj.art-c870d70072d743c39e9e54af711e39622022-12-21T22:14:01ZengElsevierJournal of Asia-Pacific Biodiversity2287-884X2019-06-01122311315Does predation pressure drive heronry birds to nest in the urban landscape?Ramesh Roshnath0Kunjikandi Athira1Palatty Allesh Sinu2Department of Animal Science, Central University of Kerala, Padannakad PO 671314, Kerala, India; Correspoding author. Tel.: +919995709530.Department of Applied Zoology, Kannur University Campus, Manathavady, Wayanad, Kerala, IndiaDepartment of Animal Science, Central University of Kerala, Padannakad PO 671314, Kerala, IndiaPredation is an important selective force that determines breeding success in all animals. Animals adopt a range of antipredatory strategies to overcome predation pressure in the breeding site, which is also a major predation ground. Birds mitigate this pressure through parental care, colonial or group nesting, and selecting habitats that are predicted to hold less number and diversity of predators. Heronry birds' increasing use of urban habitats for breeding has been suggested as a measure to avoid predation pressure, despite quantitative support for this argument is lacking. We tested this hypothesis by comparing diversity, abundance, and frequency of predation attempts of birds of prey on heronries of wild (mangrove forest) and urban habitats. The house crow (Corvus splendens), brahminy kite (Haliastur indus), and black kite (Milvus migrans) were the major birds of preys in mangrove forests and urban areas. The predators partitioned the nest resources; the kites preyed the chicks, and the crows preyed the eggs. The abundance of avian predators and the frequency of successful predation of eggs and chicks were significantly lower in urban heronries compared with mangroves. Our results suggest that predation might be a reason for the birds to switch to urban habitats for breeding. Keywords: Breeding, Heronry, House crow, Predation, Urban ecosystemhttp://www.sciencedirect.com/science/article/pii/S2287884X18304096 |
| spellingShingle | Ramesh Roshnath Kunjikandi Athira Palatty Allesh Sinu Does predation pressure drive heronry birds to nest in the urban landscape? Journal of Asia-Pacific Biodiversity |
| title | Does predation pressure drive heronry birds to nest in the urban landscape? |
| title_full | Does predation pressure drive heronry birds to nest in the urban landscape? |
| title_fullStr | Does predation pressure drive heronry birds to nest in the urban landscape? |
| title_full_unstemmed | Does predation pressure drive heronry birds to nest in the urban landscape? |
| title_short | Does predation pressure drive heronry birds to nest in the urban landscape? |
| title_sort | does predation pressure drive heronry birds to nest in the urban landscape |
| url | http://www.sciencedirect.com/science/article/pii/S2287884X18304096 |
| work_keys_str_mv | AT rameshroshnath doespredationpressuredriveheronrybirdstonestintheurbanlandscape AT kunjikandiathira doespredationpressuredriveheronrybirdstonestintheurbanlandscape AT palattyalleshsinu doespredationpressuredriveheronrybirdstonestintheurbanlandscape |