Time Budgets and Body Temperatures of American Golden-Plover Chicks in Relation to Ambient Temperature

Krijgsveld, Karen L.; Reneerkens, Jeroen; McNett, Gabriel D.; Ricklefs, Robert E.

doi:10.1650/0010-5422(2003)105[0268:tbabto]2.0.co;2

Cited by 17 publications

(11 citation statements)

References 17 publications

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“…In precocial chicks, brooding is energetically favourable if chicks can find sufficient food during their foraging bouts (Visser & Ricklefs 1993b, Krijgsveld et al 2003). Chicks at higher latitudes divide their time between brooding and foraging, with little time spent in other behaviours (Schekkerman & Visser 2001, Schekkerman et al 2003, Tjørve et al in press).…”

Section: Discussionmentioning

confidence: 99%

The energetic implications of precocial development for three shorebird species breeding in a warm environment

Tjørve

Underhill

Visser

2007

Ibis

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Section: Discussionmentioning

confidence: 99%

The energetic implications of precocial development for three shorebird species breeding in a warm environment

Tjørve

Underhill

Visser

2007

Ibis

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“…Last, using age‐specific foraging rates of black‐tailed godwit chicks as a proxy (Schekkerman and Boele ), we determined how many minutes a godwit chick would have to spend foraging to capture the additional quantity of invertebrates. Chicks feeding on invertebrates can have reduced digestive efficiency compared to other diets (Albano et al ), but the low foraging efficiency and relatively short foraging bouts of precocial shorebird chicks in Arctic/Boreal environments likely minimize the potential for physiological bottlenecks to bias our estimates (Krijgsveld et al , Budden and Wright ).…”

Section: Methodsmentioning

confidence: 99%

Ecological mismatches are moderated by local conditions for two populations of a long‐distance migratory bird

Senner

Stager

Sandercock

2016

Oikos

119

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Ecological mismatches between reproductive events and seasonal resource peaks are frequently proposed to be a key driver of population dynamics resulting from global climate change. Many local populations are experiencing reduced reproductive success as a consequence of mismatches, but few mismatches have led to species-level population declines. To better understand this apparent paradox, we investigated the breeding phenology and chick survival of two disjunct populations of Hudsonian godwits Limosa haemastica breeding at Churchill, Manitoba and Beluga River, Alaska. Only one population experienced a mismatch: godwits bred nearly one week after the onset of the invertebrate peak at Churchill because of asynchronous climatic change occurring throughout their annual cycle. However, chicks were not uniformly aff ected by the mismatch -growth rates and survival of young chicks were not correlated with invertebrate abundance, but older chicks tended to suff er lower survival rates on days of low invertebrate abundance. Ecological mismatches thus resulted in a complex array of consequences, but nonetheless contributed to reductions in chick survival. In contrast, godwits at Beluga River hatched their chicks just before the invertebrate peak, such that the period of highest energetic need coincided with the period of highest invertebrate abundance. As a result, growth rates and survival of godwit chicks were unaff ected by invertebrate abundance. Godwits at Beluga River were able to properly time their reproduction because of predictable rates of climatic change and strong selection imposed by high predation on late-hatched chicks. Taken together, our results suggest that population-specifi c, local-scale selection pressures play a critical role in determining the degree and severity of ecological mismatches. Th e potential for global climate change to induce species-level population declines may therefore be mediated by the spatial variation in the selection pressures acting across a species ' range.

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“…The length of brooding bouts decreased as chicks aged, and lasted about 4 min on average. In contrast, brooding bouts of European Golden-Plover (Pluvialis apricaria) chicks lasted an average of 12 min and did not vary with age (Krijgsveld et al 2003). FIGURE 2.…”

Section: Age-dependent Survivalmentioning

confidence: 99%

Age-Related Survival and Behavior of Snowy Plover Chicks

Colwell

Hurley

Hall

et al. 2007

Condor

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Precocial young often experience high mortality prior to achieving flight, especially in the first days after hatching. We quantified relationships between chick age, survival, behavior, and response to natural and anthropogenic danger for the threatened Western Snowy Plover (Charadrius alexandrinus nivosus) in coastal northern California, USA. Plover chicks were most likely to die in the first three days of their 28-day prefledging period, especially on sandy ocean beaches compared to coarser substrates of river habitats. Chick survival in both habitats increased across the ∼120-day chick-rearing period. Improved survival of older chicks coincided with an age-related reduction in brooding and increased distance from the tending parent, which was not related to season. Lower survival of younger chicks was correlated with a tendency to lie motionless when approached by humans; nearly all older chicks responded to human approach by running to evade danger. Chicks of all ages were more likely to lie motionless when potential avian predators flew nearby. Agedependent survival of Snowy Plover chicks paralleled a trend of increasing development, thermal independence from adults, and capability of evading predators. Abstract. Precocial young often experience high mortality prior to achieving flight, especially in the first days after hatching. We quantified relationships between chick age, survival, behavior, and response to natural and anthropogenic danger for the threatened Western Snowy Plover (Charadrius alexandrinus nivosus) in coastal northern California, USA. Plover chicks were most likely to die in the first three days of their 28-day prefledging period, especially on sandy ocean beaches compared to coarser substrates of river habitats. Chick survival in both habitats increased across the ,120-day chick-rearing period. Improved survival of older chicks coincided with an age-related reduction in brooding and increased distance from the tending parent, which was not related to season. Lower survival of younger chicks was correlated with a tendency to lie motionless when approached by humans; nearly all older chicks responded to human approach by running to evade danger. Chicks of all ages were more likely to lie motionless when potential avian predators flew nearby. Age-dependent survival of Snowy Plover chicks paralleled a trend of increasing development, thermal independence from adults, and capability of evading predators.Key words: antipredator behavior, Charadrius alexandrinus, chick survival, habitat quality, human disturbance, predation danger, Snowy Plover. Supervivencia Relativa a la Edad y Comportamiento de los Pichones deCharadrius alexandrinusResumen. Los pichones precociales usualmente experimentan una alta mortalidad antes de adquirir la capacidad del vuelo, especialmente en los primeros días luego de eclosionar. Cuantificamos la relació n entre la edad del pichó n, la supervivencia, el comportamiento y la respuesta a peligros naturales y antropogénicos para la especie amenazada Charadrius ...

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Time Budgets and Body Temperatures of American Golden-Plover Chicks in Relation to Ambient Temperature

Cited by 17 publications

References 17 publications

The energetic implications of precocial development for three shorebird species breeding in a warm environment

The energetic implications of precocial development for three shorebird species breeding in a warm environment

Ecological mismatches are moderated by local conditions for two populations of a long‐distance migratory bird

Age-Related Survival and Behavior of Snowy Plover Chicks

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