scholarly journals Passerines may be sufficiently plastic to track temperature-mediated shifts in optimum lay date

2016 ◽  
Vol 22 (10) ◽  
pp. 3259-3272 ◽  
Author(s):  
Albert B. Phillimore ◽  
David I. Leech ◽  
James W. Pearce-Higgins ◽  
Jarrod D. Hadfield
Keyword(s):  
Lay Date

scholarly journals Can threatened species adapt in a restored habitat? No expected evolutionary response in lay date for the New Zealand hihi

2018 ◽  
Vol 12 (3) ◽  
pp. 482-497 ◽  
Author(s):  
Pierre Villemereuil ◽  
Alexis Rutschmann ◽  
John G. Ewen ◽  
Anna W. Santure ◽  
Patricia Brekke
Keyword(s):  
New Zealand ◽  
Threatened Species ◽  
Evolutionary Response ◽  
Lay Date

scholarly journals Backpack-mounted satellite transmitters do not affect reproductive performance in a migratory bustard

2019 ◽  
Vol 65 (6) ◽  
Author(s):  
Robert J. Burnside ◽  
João L. Guilherme ◽  
Nigel J. Collar ◽  
Paul M. Dolman
Keyword(s):  
Reproductive Performance ◽  
Parameter Estimates ◽  
Reproductive Parameters ◽  
Chick Survival ◽  
Life History Parameter ◽  
Egg Hatchability ◽  
Satellite Transmitters ◽  
Breeding Seasons ◽  
Lay Date ◽  
Ground Nesting

AbstractBackpack-mounted satellite transmitters (PTTs) are used extensively in the study of avian habitat use and of the movements and demography of medium- to large-bodied species, but can affect individuals’ performance and fitness. Transparent assessment of potential transmitter effects is important for both ethical accountability and confidence in, or adjustment to, life history parameter estimates. We assessed the influence of transmitters on seven reproductive parameters in Asian houbara Chlamydotis macqueenii, comparing 114 nests of 38 females carrying PTTs to 184 nests of untagged birds (non-PTT) over seven breeding seasons (2012–2018) in Uzbekistan. There was no evidence of any influence of PTTs on: lay date (non-PTT x̅ = 91.7 Julian day ± 12.3 SD; PTT x̅ = 95.1 Julian day ± 15.7 SD); clutch size (non-PTT x̅= 3.30 ± 0.68 SD; PTT x̅ = 3.25 ± 0.65 SD); mean egg weight at laying (non-PTT x̅ = 66.1 g ± 5.4 SD; PTT x̅ = 66.4 g ± 5.4 SD); nest success (non-PTT x̅ = 57.08% ± 4.3 SE; PTT x̅ = 58.24% ± 4.5 SE for nests started 2 April); egg hatchability (non-PTT x̅ = 88.3% ± 2.2 SE; PTT x̅ = 88.3% ± 2.6 SE); or chick survival to fledging from broods that had at least one surviving chick (non-PTT x̅ = 63.4% ± 4.2 SE; PTT x̅ = 64.4% ± 4.7 SE). High nesting propensity (97.3% year−1 ± 1.9% SE) of tagged birds indicated minimal PTT effect on breeding probability. These findings show that harness-mounted transmitters can give unbiased measures of demographic parameters of this species, and are relevant to other large-bodied, cursorial, ground-nesting birds of open habitats, particularly other bustards.

scholarly journals Interactions between lay date, clutch size, and postlaying energetic needs in a capital breeder

2010 ◽  
Vol 22 (1) ◽  
pp. 162-168 ◽  
Author(s):  
Édith Sénéchal ◽  
Joël Bêty ◽  
H. Grant Gilchrist
Keyword(s):  
Clutch Size ◽  
Capital Breeder ◽  
Lay Date

Latitudinal variation in clutch size-lay date regressions inTachycinetaswallows: effects of food supply or demography?

Ecography ◽  
2014 ◽  
Vol 37 (7) ◽  
pp. 670-678 ◽  
Author(s):  
David W. Winkler ◽  
Kevin M. Ringelman ◽  
Peter O. Dunn ◽  
Linda Whittingham ◽  
David J. T. Hussell ◽  
...  
Keyword(s):  
Clutch Size ◽  
Food Supply ◽  
Latitudinal Variation ◽  
Lay Date

Natal experience and pre‐breeding environmental conditions affect lay date plasticity in Savannah sparrows

Ecology ◽  
2021 ◽  
Author(s):  
Joseph B. Burant ◽  
Eric W. Heisey ◽  
Nathaniel T. Wheelwright ◽  
Amy E. M. Newman ◽  
Shannon Whelan ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Savannah Sparrows ◽  
Lay Date

scholarly journals The environmental predictors of spatio-temporal variation in the breeding phenology of a passerine bird

2019 ◽  
Vol 286 (1908) ◽  
pp. 20190952 ◽  
Author(s):  
Jack D. Shutt ◽  
Irene Benedicto Cabello ◽  
Katharine Keogan ◽  
David I. Leech ◽  
Jelmer M. Samplonius ◽  
...  
Keyword(s):  
Passerine Bird ◽  
Egg Laying ◽  
Laying Date ◽  
Reproductive Phenology ◽  
Breeding Phenology ◽  
Environmental Predictors ◽  
Cyanistes Caeruleus ◽  
Night Time ◽  
Lay Date ◽  
Nest Initiation

Establishing the cues or constraints that influence avian timing of breeding is the key to accurate prediction of future phenology. This study aims to identify the aspects of the environment that predict the timing of two measures of breeding phenology (nest initiation and egg laying date) in an insectivorous woodland passerine, the blue tit ( Cyanistes caeruleus ). We analyse data collected from a 220 km, 40-site transect over 3 years and consider spring temperatures, tree leafing phenology, invertebrate availability and photoperiod as predictors of breeding phenology. We find that mean night-time temperature in early spring is the strongest predictor of both nest initiation and lay date and suggest this finding is most consistent with temperature acting as a constraint on breeding activity. Birch budburst phenology significantly predicts lay date additionally to temperature, either as a direct cue or indirectly via a correlated variable. We use cross-validation to show that our model accurately predicts lay date in two further years and find that similar variables predict lay date well across the UK national nest record scheme. This work refines our understanding of the principal factors influencing the timing of tit reproductive phenology and suggests that temperature may have both a direct and indirect effect.

scholarly journals The use of GIS in estimating spatial variation in habitat quality: a case study of lay-date in the Great Tit Parus major

Ibis ◽  
2007 ◽  
Vol 149 ◽  
pp. 110-118 ◽  
Author(s):  
TEDDY A. WILKIN ◽  
CHRISTOPHER M. PERRINS ◽  
BEN C. SHELDON
Keyword(s):  
Spatial Variation ◽  
Habitat Quality ◽  
Parus Major ◽  
Great Tit ◽  
Lay Date

scholarly journals Effects of nocturnal illumination on life-history decisions and fitness in two wild songbird species

2015 ◽  
Vol 370 (1667) ◽  
pp. 20140128 ◽  
Author(s):  
Maaike de Jong ◽  
Jenny Q. Ouyang ◽  
Arnaud Da Silva ◽  
Roy H. A. van Grunsven ◽  
Bart Kempenaers ◽  
...  
Keyword(s):  
Life History ◽  
Natural Habitat ◽  
Red Light ◽  
Parus Major ◽  
Light Treatment ◽  
Adult Survival ◽  
Light Spectra ◽  
Led Lights ◽  
Lay Date ◽  
Effect Of Light

The effects of artificial night lighting on animal behaviour and fitness are largely unknown. Most studies report short-term consequences in locations that are also exposed to other anthropogenic disturbance. We know little about how the effects of nocturnal illumination vary with different light colour compositions. This is increasingly relevant as the use of LED lights becomes more common, and LED light colour composition can be easily adjusted. We experimentally illuminated previously dark natural habitat with white, green and red light, and measured the effects on life-history decisions and fitness in two free-living songbird species, the great tit ( Parus major ) and pied flycatcher ( Ficedula hypoleuca ) in two consecutive years. In 2013, but not in 2014, we found an effect of light treatment on lay date, and of the interaction of treatment and distance to the nearest lamp post on chick mass in great tits but not in pied flycatchers. We did not find an effect in either species of light treatment on breeding densities, clutch size, probability of brood failure, number of fledglings and adult survival. The finding that light colour may have differential effects opens up the possibility to mitigate negative ecological effects of nocturnal illumination by using different light spectra.

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