ArticleRoyal Society open science2018
Nest-site competition and killing by invasive parakeets cause the decline of a threatened bat population.
Article in Royal Society open science, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed.
- Spatial and Temporal Trends in the Invasion Dynamics of the Ring-Necked Parakeet (Animals : an open access journal from MDPI · 2026Article
- Roosting behaviour of greater noctule bats (Royal Society open science · 2025Article
- Effects of the Invasive Common Myna (Biology · 2025Article
- Returning to the Wilderness: Potential Habitat Suitability of Non-Native Pet Birds in South Africa.Biology · 2024Article
- Dangerous neighbours: Birds and bird-eating bats sharing tree cavities.Ecology and evolution · 2024Article
- Parrots in the wild in Polish cities.PloS one · 2024Article
- What Drives the Alien Parrot Richness and Occurrence in Urban Green Spaces along the Annual Cycle in Buenos Aires City, Argentina?Animals : an open access journal from MDPI · 2023Article
- Continuous low-intensity predation by owls (Royal Society open science · 2023Article
- Global economic costs of alien birds.PloS one · 2023Article
- Evaluation of roost culling as a management strategy for reducing invasive rose-ringed parakeet (Biological invasions · 2023Article
- Nesting innovations allow population growth in an invasive population of rose-ringed parakeets.Current zoology · 2022Article
- Annual Censuses and Citizen Science Data Show Rapid Population Increases and Range Expansion of Invasive Rose-Ringed and Monk Parakeets in Seville, Spain.Animals : an open access journal from MDPI · 2022Article
- Article
- Behavioral Causes, Ecological Consequences, and Management Challenges Associated with Wildlife Foraging in Human-Modified Landscapes.Bioscience · 2021Article
- Microsatellite characterisation and sex-typing in two invasive parakeet species, the monk parakeet Myiopsitta monachus and ring-necked parakeet Psittacula krameri.Molecular biology reports · 2020Article
- Nest site availability and niche differentiation between two cavity-nesting birds in time and space.Ecology and evolution · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The identification of effects of invasive species is challenging owing to their multifaceted impacts on native biota. Negative impacts are most often reflected in individual fitness rather than in population dynamics of native species and are less expected in low-biodiversity habitats, such as urban environments. We report the long-term effects of invasive rose-ringed parakeets on the largest known population of a threatened bat species, the greater noctule, located in an urban park. Both species share preferences for the same tree cavities for breeding. While the number of parakeet nests increased by a factor of 20 in 14 years, the number of trees occupied by noctules declined by 81%. Parakeets occupied most cavities previously used by noctules, and spatial analyses showed that noctules tried to avoid cavities close to parakeets. Parakeets were highly aggressive towards noctules, trying to occupy their cavities, often resulting in noctule death. This led to a dramatic population decline, but also an unusual aggregation of the occupied trees, probably disrupting the complex social behaviour of this bat species. These results indicate a strong impact through site displacement and killing of competitors, and highlight the need for long-term research to identify unexpected impacts that would otherwise be overlooked.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.