Factors Affecting Piping Plover Chick Survival in Different Brood-Rearing Habitats

1995 ◽  
Vol 59 (4) ◽  
pp. 646 ◽  
Author(s):  
John P. Loegering ◽  
James D. Fraser
Keyword(s):  
Piping Plover ◽  
Chick Survival ◽  
Factors Affecting ◽  
Brood Rearing

scholarly journals Spatial distribution of the Barbary Partridge (Alectoris barbara) in Sardinia explained by land use and climate

2021 ◽  
Vol 67 (4) ◽  
Author(s):  
Gianpasquale Chiatante ◽  
Marta Giordano ◽  
Anna Vidus Rosin ◽  
Oreste Sacchi ◽  
Alberto Meriggi
Keyword(s):  
Land Use ◽  
Conservation Status ◽  
Distance Sampling ◽  
Strong Relationship ◽  
European Population ◽  
Factors Affecting ◽  
Brood Rearing ◽  
Management Actions ◽  
Negative Effect ◽  
Study Sites

AbstractMore than half of the European population of the Barbary Partridge is in Sardinia; nonetheless, the researches concerning this species are very scarce, and its conservation status is not defined because of a deficiency of data. This research aimed to analyse the habitat selection and the factors affecting the abundance and the density of the Barbary Partridge in Sardinia. We used the data collected over 8 years (between 2004 and 2013) by spring call counts in 67 study sites spread on the whole island. We used GLMM to define the relationships between the environment (topography, land use, climate) both the occurrence and the abundance of the species. Moreover, we estimated population densities by distance sampling. The Barbary Partridge occurred in areas at low altitude with garrigue and pastures, avoiding woodlands and sparsely vegetated areas. We found a strong relationship between the occurrence probability and the climate, in particular, a positive relation with temperature and a negative effect of precipitation, especially in April–May, during brood rearing. Furthermore, dry crops positively affected the abundance of the species. We estimated a density of 14.1 partridges per km2, similar to other known estimates. Our findings are important both because they increase the knowledge concerning this species, which is considered data deficient in Italy, and because they are useful to plan management actions aimed to maintain viable populations if necessary.

Factors Affecting Piping Plover Productivity on Assateague Island

1991 ◽  
Vol 55 (3) ◽  
pp. 525 ◽  
Author(s):  
Michael E. Patterson ◽  
James D. Fraser ◽  
Joseph W. Roggenbuck
Keyword(s):  
Piping Plover ◽  
Factors Affecting ◽  
Assateague Island

scholarly journals Piping plover chick survival negatively correlated with beach recreation

2018 ◽  
Vol 82 (8) ◽  
pp. 1608-1616 ◽  
Author(s):  
Audrey L. DeRose-Wilson ◽  
Kelsi L. Hunt ◽  
Julia D. Monk ◽  
Daniel H. Catlin ◽  
Sarah M. Karpanty ◽  
...  
Keyword(s):  
Piping Plover ◽  
Chick Survival ◽  
Beach Recreation

Factors affecting piping plover hatching success on Long Island, New York

2011 ◽  
Vol 75 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Paul J. Doherty ◽  
Julie A. Heath
Keyword(s):  
New York ◽  
Hatching Success ◽  
Long Island ◽  
Piping Plover ◽  
Factors Affecting

scholarly journals Baseline corticosterone does not reflect iridescent plumage traits in female tree swallows

2018 ◽  
Author(s):  
Keneth Sarpong ◽  
Christine L. Madliger ◽  
Christopher M. Harris ◽  
Oliver P. Love ◽  
Stéphanie M. Doucet ◽  
...  
Keyword(s):  
Tree Swallows ◽  
Secondary Sexual Traits ◽  
Factors Affecting ◽  
Brood Rearing ◽  
Trade Offs ◽  
Female Tree ◽  
Baseline Corticosterone ◽  
Sexual Characteristics ◽  
The Relationship ◽  
Secondary Sexual

AbstractThe production of high quality secondary sexual traits can be constrained by trade-offs in the allocation of energy and nutrients with other metabolic activities, and is mediated by physiological processes. In birds, the factors influencing male plumage quality have been well studied; however, factors affecting female plumage quality are poorly understood. Furthermore, it remains uncertain which physiological traits mediate the relationship between body condition and ornaments. In this three-year study of after-second-year female tree swallows (Tachycineta bicolor), we investigated (1) the relationship between baseline corticosterone near the end of the brood-rearing period (CORTBR) and feather colour characteristics (hue, saturation, brightness) the following year, and (2) the relationship between baseline corticosterone measured during incubation (CORTI) and brood rearing (CORTBR), and feather colour in the same year. To control for reproductive effort, we included reproductive parameters as covariates in all analyses. In this first study between CORT and the plumage colour characteristics of a species bearing iridescent feathers, we did not find any relationship between CORTBRand the colour of subsequently-produced feathers, nor did we find any relationship between CORTIand the colour of feathers displayed during that breeding season. If CORT levels at the end of breeding carry over to influence the immediately subsequent moult period as we expect, our results generally indicate that structural plumage quality may not be as sensitive to circulating CORT levels compared to carotenoid-based colouration. Future studies, particularly those employing experimental manipulations of CORT during moult in species with iridescent traits, are necessary to fully determine the role glucocorticoids play in mediating the quality of secondary sexual characteristics.

Effectiveness of direct payments to increase reproductive success of sandbar-nesting river birds in Cambodia

2017 ◽  
Vol 27 (4) ◽  
pp. 495-511 ◽  
Author(s):  
ANDREA H. CLAASSEN ◽  
KO SOK ◽  
TODD W. ARNOLD ◽  
FRANCESCA J. CUTHBERT
Keyword(s):  
Reproductive Success ◽  
Nest Success ◽  
Survival Rates ◽  
Species Conservation ◽  
Bird Species ◽  
Control Measures ◽  
Chick Survival ◽  
Factors Affecting ◽  
Nest Protection ◽  
Direct Payments

SummaryDirect payments to communities or individuals have gained traction as a tool for species conservation; however, few studies have evaluated their effectiveness. From 2010 to 2014, we monitored nests and implemented a direct payment nest protection programme for six sandbar-nesting bird species on the Mekong River, Cambodia, and tested if nest protection improved reproductive success. Nests were guarded by community members; additionally, exclosures were used to protect nests of River Tern Sterna aurantia, the species of highest conservation concern. We investigated factors affecting nest and chick survival, and probability of nest failure due to egg harvest or predation. Nesting later in the season generally resulted in lower nest and chick survival. Nest protection improved survival rates of River Tern nests and chicks, and Small Pratincole Glareola lactea nests. River Tern nest success was 60% for exclosed (and guarded) nests, 29% for guarded (but unexclosed) nests, and 5% for unprotected nests. River Tern fledging success was 82% for exclosed chicks, 40% for chicks that were guarded only, and 2% for unprotected chicks. Small Pratincole nest success was 21% for guarded and 6% for unguarded nests. Egg harvest by humans was lower among protected nests and declined during the study. Nest predation by animals increased during the study despite nest guarding; however, predator exclosures effectively protected nests and chicks. Additional predator control measures could further improve reproductive success of sandbar-nesting birds. Overall, nest protection involving direct payments was highly effective, but required diligent use of nest exclosures, frequent monitoring, and strong community relationships.

scholarly journals Growth of two Atlantic Coast Piping Plover populations

The Condor ◽  
2019 ◽  
Vol 121 (3) ◽  
Author(s):  
Chelsea E Weithman ◽  
Samantha G Robinson ◽  
Kelsi L Hunt ◽  
Jon Altman ◽  
Henrietta A Bellman ◽  
...  
Keyword(s):  
New York ◽  
North Carolina ◽  
Reproductive Output ◽  
Atlantic Coast ◽  
Piping Plover ◽  
Charadrius Melodus ◽  
Chick Survival ◽  
Conservation History ◽  
Piping Plovers ◽  
The U.S

AbstractSpecies listed under the U.S. Endangered Species Act are required to meet stated recovery goals for delisting. These goals often are developed early in the species’ conservation history and may need to be updated or refined as new information becomes available. The Atlantic Coast Piping Plover (Charadrius melodus), which was listed more than 30 yr ago, has not met recovery goals through much of its range. Initial recovery goals included maintaining a reproductive output of 1.5 fledged chicks per pair for 5 yr. This goal was based on modelling that assumed equal survival rates for adults throughout the range, but recent studies suggest that demographic rates may vary with latitude. To investigate latitudinal variation, we developed demographic and population growth estimates for 2 breeding populations of Piping Plovers on the U.S. Atlantic Coast on Fire Island, New York (40.7°N), and on the Outer Banks of North Carolina (35.3°N) in 2013–2017. Breeding success (nest success and pre-fledge chick survival) varied annually but was lower in North Carolina than New York. Average adult true survival in New York (x̅ = 0.73, SE = 0.04) was similar to average survival in North Carolina (x̅ = 0.69, SE = 0.07). Annual post-fledging survival for both sites, however, was variable and often higher than had been previously reported for Atlantic Coast Piping Plovers (0.43–0.66 for New York; 0.31 and 1.0 for North Carolina). While the estimated reproductive output needed for a stationary population for both sites was similar (1.10 chicks per pair for New York, 95% CI: 0.83–1.41; 1.08 for North Carolina, 95% CI: 0.67–1.59), only the New York population achieved or exceeded these values during our study. Our findings suggest that understanding annual and latitudinal demographic variability would be helpful in refining recovery goals.

scholarly journals Nesting and Reproductive Activities of Greater Sage-Grouse in a Declining Northern Fringe Population

The Condor ◽  
2001 ◽  
Vol 103 (3) ◽  
pp. 537-543 ◽  
Author(s):  
Cameron L. Aldridge ◽  
R. Mark Brigham
Keyword(s):  
Reproductive Effort ◽  
Radio Telemetry ◽  
Population Decline ◽  
Centrocercus Urophasianus ◽  
Chick Survival ◽  
Sage Grouse ◽  
Brood Rearing ◽  
Northern Edge ◽  
Northern Fringe ◽  
Reproductive Activities

Abstract In Canada, Greater Sage-Grouse (Centrocercus urophasianus) are at the northern edge of their range, occurring only in southeastern Alberta and southwestern Saskatchewan. The population in Canada has declined by 66% to 92% over the last 30 years. We used radio-telemetry to follow 20 female Greater Sage-Grouse and monitor productivity in southeastern Alberta, and to assess habitat use at nesting and brood-rearing locations. All females attempted to nest. Mean clutch size (7.8 eggs per nest) was at the high end of the normal range for sage-grouse (typically 6.6–8.2). Nest success (46%) and breeding success (55%) were within the range found for more southerly populations (15% to 86% and 15% to 70%, respectively). Thirty-six percent of unsuccessful females attempted to renest. Fledging success was slightly lower than reported in other studies. Thus, reproductive effort does not appear to be related to the population decline. However, chick survival to ≥50 days of age (mean = 18%) was only about half of that estimated (35%) for a stable or slightly declining population, suggesting that chick survival may be the most important factor reducing overall reproductive success and contributing to the decline of Greater Sage-Grouse in Canada. Actividades de Anidación y Reproducción de Centrocercus urophasianus en una Población del Extremo Norte en Declive Resumen. En Canadá, Centrocercus urophasianus está en el extremo norte de su distribución, encontrándose sólo en el sureste de Alberta y el suroeste de Saskatchewan. La población de Canadá ha disminuido entre el 66% y 92% durante los últimos 30 años. Utilizamos radio-telemetría para seguir a 20 hembras de C. urophasianus y monitorear su productividad en el sureste de Alberta y para evaluar el uso de hábitat en sitios de anidación y de cría de los pichones. Todas las hembras intentaron anidar. El tamaño promedio de la nidada (7.8 huevos por nido) estuvo en el extremo superior del rango normal de C. urophasianus (típicamente 6.6–8.2). El éxito de anidación (46%) y de reproducción (55%) estuvieron dentro de los rangos encontrados en poblaciones de más al sur (15% a 86% y 15% a 70%, respectivamente). El treinta y seis por ciento de las hembras que no tuvieron éxito intentaron volver a anidar. El éxito en la crianza de polluelos hasta la etapa de volantones fue ligeramente menor que el reportado en otros estudios. Por lo tanto, el esfuerzo reproductivo no parece estar relacionado con el declive poblacional. Sin embargo, la supervivencia de los polluelos hasta 50 días de edad o más (promedio = 18%) fue sólo aproximadamente la mitad de lo que se ha estimado para una población estable o en ligero declive (35%), lo que sugiere que la supervivencia de los pichones podría ser el factor más importante reduciendo el éxito reproductivo en general y contribuyendo al declive de C. urophasianus en Canadá.

scholarly journals Sequential Polyandry in Piping Plover, Charadrius melodus, Nesting in Eastern Canada

2004 ◽  
Vol 118 (3) ◽  
pp. 444 ◽  
Author(s):  
Diane L. Amirault ◽  
Jonathan Kierstead ◽  
Peter MacDonald ◽  
Larry MacDonnell
Keyword(s):  
Nova Scotia ◽  
Piping Plover ◽  
Charadrius Melodus ◽  
Eastern Canada ◽  
Brood Rearing ◽  
Nesting Season

On Cape Sable Island, Nova Scotia, we confirmed that a banded female Piping Plover (Charadrius melodus melodus) produced two broods of chicks during the 2000 nesting season, the second on a beach approximately 2 km from the first. The female abandoned her second brood two days after hatching, leaving the male to complete brood rearing.

Variation in Parental Care of Common Goldeneye (Bucephala Clangula) Females

Behaviour ◽  
1992 ◽  
Vol 123 (3-4) ◽  
pp. 247-260 ◽  
Author(s):  
Hannu PÖYSÄ
Keyword(s):  
Parental Care ◽  
Food Abundance ◽  
Bucephala Clangula ◽  
Factors Affecting ◽  
Brood Rearing ◽  
Common Goldeneye

AbstractFactors affecting the variation of parental care were examined in the precocial, nidifugous common goldeneye (Bucephala clangula), a species with uniparental female care. Parental care, measured as the time spent by the female in rearing the brood, varied considerably. Habitat shelterness and food abundance in brood rearing lakes did not affect the duration of parental care. Brood mortality and size affected females' decision to abandon the brood; broods left younger experienced higher mortality during the parental care and were smaller than broods reared for longer. Offspring left by a female did not have higher mortality than same-aged offspring not left. Broods that were deserted early did also produce young to the fledging age.

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