Differential Parasitism Between Two Suitable Cowbird Hosts

Walsh, John J.; Tuff, Ty; Cruz, Alexander; Chace, Jameson F.

doi:10.2174/1874453201508010032

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…First, breeding activity among birds nesting in the ponderosa pine (Pinus ponderosa) woodlands of OSMP typically peaks in June (e.g. [34][35][36]). By timing our playback of the phantom chorus later in the season, we not only minimized potential disruption of breeding birds' behaviours caused by playback (e.g.…”

Section: Methodsmentioning

confidence: 99%

The phantom chorus: birdsong boosts human well-being in protected areas

et al. 2020

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Spending time in nature is known to benefit human health and well-being, but evidence is mixed as to whether biodiversity or perceptions of biodiversity contribute to these benefits. Perhaps more importantly, little is known about the sensory modalities by which humans perceive biodiversity and obtain benefits from their interactions with nature. Here, we used a ‘phantom birdsong chorus' consisting of hidden speakers to experimentally increase audible birdsong biodiversity during ‘on' and ‘off' (i.e. ambient conditions) blocks on two trails to study the role of audition in biodiversity perception and self-reported well-being among hikers. Hikers exposed to the phantom chorus reported higher levels of restorative effects compared to those that experienced ambient conditions on both trails; however, increased restorative effects were directly linked to the phantom chorus on one trail and indirectly linked to the phantom chorus on the other trail through perceptions of avian biodiversity. Our findings add to a growing body of evidence linking mental health to nature experiences and suggest that audition is an important modality by which natural environments confer restorative effects. Finally, our results suggest that maintaining or improving natural soundscapes within protected areas may be an important component to maximizing human experiences.

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Section: Methodsmentioning

confidence: 99%

The phantom chorus: birdsong boosts human well-being in protected areas

et al. 2020

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Host Resource Partitioning Among Sympatric Molothrine Generalist Brood Parasites

Chace

Cruz

2017

Avian Brood Parasitism

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Impacts of brood parasitism by shiny cowbird Molothrus bonariensis on the breeding success of a small host, the black-backed water tyrant Fluvicola albiventer

et al. 2023

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The shiny cowbird Molothrus bonariensis parasitizes many species with different life-history traits and has a detrimental effect on the survival of the progeny of the hosts. In response, hosts have developed numerous antiparasitic defenses. Here, we examined the effects of brood parasitism by shiny cowbird on the clutch and brood sizes (83 nests) in a small host, the black-backed water-tyrant Fluvicola albiventer. We also studied whether the death of parasite nestlings was related to the care of the foster parents and whether the host had any antiparasitic defense against the shiny cowbird. Our results indicate that brood parasitism significantly decreased the host hatching and fledging successes. The majority of nest failures (57%) were caused by brood parasitism. Shiny cowbird parasitism occurred in 52% of nests and the intensity of parasitism was 1.23 ± 0.53 eggs per parasitized nest. Of the total host eggs, 54% were damaged. During the incubation stage, 20 nests (47%) were abandoned because of egg punctures by Shiny cowbirds females. Only two parasitic fledglings were recorded, while the remaining nestlings either died from starvation (n = 12) or predation (n = 3). Foster parents abandoned parasitic nestlings between 5 and 10 days old. Our findings demonstrate that the shiny cowbird have very low rates of fledging success when parasitizing black-backed water-tyrant. Also, parasitism had a high reproductive cost in the black-backed water-tyrant because a very low proportion (7%) of the parasitized nests (n = 43) were successful.

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Differential Parasitism Between Two Suitable Cowbird Hosts

Cited by 3 publications

References 40 publications

The phantom chorus: birdsong boosts human well-being in protected areas

The phantom chorus: birdsong boosts human well-being in protected areas

Host Resource Partitioning Among Sympatric Molothrine Generalist Brood Parasites

Impacts of brood parasitism by shiny cowbird Molothrus bonariensis on the breeding success of a small host, the black-backed water tyrant Fluvicola albiventer

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