Nestling provisioning behavior of Black‐backed Woodpeckers in post‐fire forest

2021 ◽  
Author(s):  
John K. Loverin ◽  
Andrew N. Stillman ◽  
Rodney B. Siegel ◽  
Robert L. Wilkerson ◽  
Matthew Johnson ◽  
...  
Keyword(s):  
Nestling Provisioning ◽  
Provisioning Behavior

scholarly journals Reproductive Success of American Kestrels: The Role of Prey Abundance and Weather

The Condor ◽  
2000 ◽  
Vol 102 (4) ◽  
pp. 814-822 ◽  
Author(s):  
Russell D. Dawson ◽  
Gary R. Bortolotti
Keyword(s):  
Reproductive Success ◽  
Natural Variation ◽  
Weather Conditions ◽  
Prey Abundance ◽  
Offspring Size ◽  
Minimum Threshold ◽  
Provisioning Behavior ◽  
American Kestrels ◽  
Parental Provisioning

Abstract We investigated how natural variation in abundance and availability of the main prey of American Kestrels (Falco sparverius), small mammals, influenced provisioning rates by parents, and offspring size and survival. Provisioning behavior of kestrels was not constrained by the abundance of food in the environment; however, the availability of food, mediated through variation in weather, appeared to significantly influence parental provisioning behavior. Moreover, variation in weather had clear effects on reproductive success because nestlings exposed to inclement weather were smaller and lighter at fledging, and less likely to survive to fledging, compared to nestlings raised during good weather conditions. Prey abundance was not related to offspring size or survival. Our results suggest American Kestrels are limited by the availability, as opposed to abundance, of food on territories. It is likely that during our study, prey abundance was above some minimum threshold necessary to support successful reproduction, and so variation in weather affected reproduction more than variation in prey abundance.

Brood sex ratios, female harem status and resources for nestling provisioning in the great reed warbler ( Acrocephalus arundinaceus )

2000 ◽  
Vol 47 (5) ◽  
pp. 312-318 ◽  
Author(s):  
H. Westerdahl ◽  
Staffan Bensch ◽  
Bengt Hansson ◽  
Dennis Hasselquist ◽  
Torbjörn von Schantz
Keyword(s):  
Sex Ratios ◽  
Great Reed Warbler ◽  
Acrocephalus Arundinaceus ◽  
Reed Warbler ◽  
Nestling Provisioning

scholarly journals Effects of manipulated levels of predation threat on parental provisioning and nestling begging

2019 ◽  
Vol 30 (4) ◽  
pp. 1123-1135 ◽  
Author(s):  
Ariane Mutzel ◽  
Anne-Lise Olsen ◽  
Kimberley J Mathot ◽  
Yimen G Araya-Ajoy ◽  
Marion Nicolaus ◽  
...  
Keyword(s):  
Life History Theory ◽  
Parus Major ◽  
Reproductive Value ◽  
Predation Threat ◽  
Growth And Survival ◽  
Provisioning Behavior ◽  
Parental Provisioning ◽  
Nestling Begging ◽  
Predator Model ◽  
Future Work

AbstractParental provisioning behavior is a major determinant of offspring growth and survival, but high provisioning rates might come at the cost of increased predation threat. Parents should thus adjust provisioning activity according to current predation threat levels. Moreover, life-history theory predicts that response to predation threat should be correlated with investment in current reproduction. We experimentally manipulated perceived predation threat in free-living great tits (Parus major) by presenting parents with a nest predator model while monitoring different aspects of provisioning behavior and nestling begging. Experiments were conducted in 2 years differing greatly in ecological conditions, including food availability. We further quantified male territorial aggressiveness and male and female exploratory tendency. Parents adjusted provisioning according to current levels of threat in an apparently adaptive way. They delayed nest visits during periods of elevated perceived predation threat and subsequently compensated for lost feeding opportunities by increasing provisioning once the immediate threat had diminished. Nestling begging increased after elevated levels of predation threat, but returned to baseline levels by the end of the experiment, suggesting that parents had fully compensated for lost feeding opportunities. There was no evidence for a link between male exploration behavior or aggressiveness and provisioning behavior. In contrast, fast-exploring females provisioned at higher rates, but only in the year with poor environmental conditions, which might indicate a greater willingness to invest in current reproduction in general. Future work should assess whether these personality-related differences in delivery rates under harsher conditions came at a cost of reduced residual reproductive value.

scholarly journals Dark or Short Nights: Differential Latitudinal Constraints in Nestling Provisioning Patterns of a Nocturnally Hunting Bird Species

PLoS ONE ◽  
2012 ◽  
Vol 7 (5) ◽  
pp. e36932 ◽  
Author(s):  
Markéta Zárybnická ◽  
Erkki Korpimäki ◽  
Michael Griesser
Keyword(s):  
Bird Species ◽  
Nestling Provisioning
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