Survival of Mallard Broods in South-Central North Dakota

Talent, Larry G.; Jarvis, Robert L.; Krapu, Gary L.

doi:10.2307/1367893

Cited by 105 publications

(75 citation statements)

References 12 publications

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“…Most mortality occurred in the first 10 days and survival improved with age. This pattern of high mortality in the first weeks after hatch has been documented previously in Ringnecked Ducks in Maine (McAuley and Longcore 1988) as well as in other diving ducks such as Canvasbacks (Aythya valisineria; Korschgen et al 1996b) and other duck species (Ball et al 1975, Talent et al 1983, Orthmeyer and Ball 1990, Grand and Flint 1996, Dzus and Clark 1997, Guyn and Clark 1999, Gendron and Clark 2002, Pietz et al 2003. Older ducklings are better able to thermo-regulate and respond appropriately to danger.…”

Section: K W I Devsupporting

confidence: 75%

“…Brood survival of Ring-necked Ducks in Minnesota (0.235) was similar to other diving ducks in the boreal forest (e.g., 5 of 22 and 1 of 10 scaup broods to 30 days [Greater Scaup (Aythya marila) and Lesser Scaup combined] in each of 2 years; Walker and Lindberg 2005), but was low compared to dabbling ducks (Mallards: Talent et al 1983, Orthmeyer and Ball 1990, Stafford et al 2002Wood Ducks: Ball et al 1975, Davis et al 2007; and Gadwall [Mareca strepera]: Pietz et al 2003), and diving ducks in parkland habitats of Minnesota and Manitoba (Canvasbacks; Korschgen et al 1996b, Leonard et al 1996. Brood survival in Ring-necked Ducks has only been examined previously in Maine and was substantially higher there (77% to 45 days, n = 64; McAuley and Longcore 1988).…”

Section: K W I Devmentioning

confidence: 55%

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Nest and brood survival of Ring-necked Ducks in relation to anthropogenic development and wetland attributes

Roy¹

2018

ACE

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ABSTRACT. The boreal and hemiboreal forests are facing increasing anthropogenic development in areas that have traditionally been remote and inaccessible. Although these forests are recognized as important to breeding waterfowl, breeding season vital rates and the influence of anthropogenic development on these rates remain largely unexplored. I estimated nest and brood survival of Ring-necked Ducks (Aythya collaris) in the hemiboreal forest of Minnesota. I located 115 nests on 43 wetlands, radio-tagged 65 nesting hens, and monitored 32 broods. I considered the influence of distance to and density of buildings and roads, and road-surface type, as well as wetland characteristics and other variables hypothesized to influence waterfowl vital rates. The best-supported nest survival models included covariates for distance from the nest to nearest road and road-surface type. Nest survival declined with increasing distance from roads and was higher for nests near paved roads, at least when the distance was < 400 m. However, an interaction term in the topranked model suggested the effect of road type varied as a function of distance from nest. The model-averaged estimate of 35-day nest survival, based on the top two models was 0.278 (SE = 0.048). Brood survival increased with brood age and open water area, and decreased with nesting habitat area and distance from open water to nearest road. Cumulative brood survival to 30 days was 0.263 (SE = 0.035). These findings indicate that roads may influence both nest and brood survival. Furthermore, higher brood survival at wetlands with less nesting habitat area and more open water area may explain why hens move broods. Conservation managers should consider how habitat needs change throughout the breeding season to adequately address the needs of Ring-necked Ducks. Further study is needed to understand how anthropogenic development can be incorporated into conservation planning. Survie des nids et des couvées de Fuligules à collier en relation avec le développement d'origine anthropique et les caractéristiques des milieux humidesRÉSUMÉ. Les forêts boréales et hémi-boréales subissent une augmentation du développement d'origine anthropique dans des régions qui étaient autrefois éloignées et inaccessibles. Bien qu'on sache que ces forêts sont importantes pour la nidification de la sauvagine, les paramètres vitaux en saison de nidification et l'influence du développement d'origine anthropique sur ce groupe d'oiseaux demeurent grandement inexplorés. Les taux de survie de nids et de couvées de Fuligules à collier (Aythya collaris) ont été estimés dans la forêt hémi-boréale du Minnesota. Cent-quinze nids situés dans 43 milieux humides ont été localisés, 56 femelles nicheuses ont été équipées d'émetteurs radios et 32 couvées ont été suivies. L'effet de la distance et de la densité des bâtiments et des routes ont été examinés, tout comme le type de revêtement des routes, de même que les caractéristiques des milieux humides et d'autres variables pouvant influer les taux de survie de la s...

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Section: K W I Devsupporting

confidence: 75%

Section: K W I Devmentioning

confidence: 55%

Nest and brood survival of Ring-necked Ducks in relation to anthropogenic development and wetland attributes

Roy¹

2018

ACE

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“…This behavior is interesting because the available data indicate that down is much less resistant to wetting than contour feathers (Nye, 1964;Kooyman et al, 1976;Mendenhall, 1979;Barré and Roussel, 1986;Taylor, 1986;Stephenson, 1997). Indeed, wetting, chilling and exhaustion have been observed to cause 1-5-day-old ducklings (class Ia; Gollop and Marshall, 1954) to die directly from hypothermia (Reed, 1975;Seymour, 1982;Talent et al, 1983;Mauser et al, 1994;Sayler and Willms, 1997). The fraction of total mortality resulting directly from hypothermia is not well known, but reported data for mallard (Anas platyrhynchos) and canvasback (Aythya valisineria) ducks suggest ranges from 8-9% (Talent et al, 1983;Mauser et al, 1994) to 24-27% , respectively.…”

mentioning

confidence: 99%

Partitioning heat loss from mallard ducklings swimming on the air–water interface

Banta

Lynott

VanSant

et al. 2004

Journal of Experimental Biology

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“…Starvation, chilling and predation have been implicated as the main causes of loss (Solman 1945, Koskimies & Lahti 1964, Hill 1982, Talent et al 1983, although the role of pike predation at Linford has yet to be studied.…”

Section: Discussionmentioning

confidence: 99%

Survival of Mallard ducklings Anas platyrhynchos and competition with fish for invertebrates on a flooded gravel quarry in England

Hill¹,

Wright

Street

1987

Ibis

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The survival of Mallard Anas platyrhynchos ducklings was studied on a complex of flooded gravel quarries in England and their weight changes in response to invertebrate predation by fish were studied by experiment. The majority of duckling loss occurred during the first 12 days after hatching but those feeding on the river where fish were scarce survived better than those feeding on lakes where fish density was high. Duckling mortality was higher in broods with large home ranges. In the experimental trials an increase in fish density was related to a reduction in both the number of emerging invertebrates and the biomass of aquatic macrophytes. Ducklings feeding in these ponds travelled further and gained less weight than on the pond with a low fish density where the number of emerging invertebrates was higher.

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Survival of Mallard Broods in South-Central North Dakota

Cited by 105 publications

References 12 publications

Nest and brood survival of Ring-necked Ducks in relation to anthropogenic development and wetland attributes

Nest and brood survival of Ring-necked Ducks in relation to anthropogenic development and wetland attributes

Partitioning heat loss from mallard ducklings swimming on the air–water interface

Survival of Mallard ducklings Anas platyrhynchos and competition with fish for invertebrates on a flooded gravel quarry in England

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