Survival of Wood Duck and Mallard Broods in North-Central Minnesota

Ball, I. J.; Gilmer, David S.; Cowardin, Lewis M.; Riechmann, John H.

doi:10.2307/3800241

Cited by 106 publications

(69 citation statements)

References 11 publications

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“…Although radio-equipped hens possibly were less efficient at rearing young than unmarked females, Ball et al (1975) found no significant difference in the size of broods reared by radioequipped and unmarked hens. Therefore, we assume that the survival patterns of radiomarked broods were not significantly different from those of unmarked broods.…”

Section: Discussionmentioning

confidence: 68%

“…All mortality of entire broods occurred in wetlands, and we could account for the loss of only a few ducklings during overland travel. Ball et al (1975) reported a negative correlation between number of surviving ducklings and cumulative distance of overland travel, suggesting that some attrition within broods occurs during travel among wetlands. Our data, however, indicate that moving overland may not contribute significantly to the loss of entire broods.…”

Section: Discussionmentioning

confidence: 99%

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Survival of Mallard Broods in South-Central North Dakota

1983

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Survival of Mallard Broods in South-Central North Dakota

1983

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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 Devmentioning

confidence: 75%

“…Hens may move broods from nesting lakes to get to better brood-rearing areas (Dzubin and Gollop 1972, Ball et al 1975, Rotella and Ratti 1992, Wayland and McNicol 1994. Better brood-rearing areas might have more invertebrates for ducklings or provide more safety from duckling predators (Talent et al 1982, Rotella and Ratti 1992, Wayland and McNicol 1994, Grand and Flint 1996 than nesting areas.…”

Section: K W I Devmentioning

confidence: 99%

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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“…Females and broods may move in response to predators, changing environmental conditions, or to secure a more suitable food source (Erikstad andSpidso 1982, Seymour andJackson 1996). Broods that travel generally have decreased survival (Ball et al 1975, Ringelman and Longcore 1982, Leonard et al 1996, Seymour and Jackson 1996 and rates of growth (Mainguy et al 2006) compared to more sedentary broods, although some of these detrimental effects may be attributable to decreased habitat quality at the final site, as opposed to extended movements by the brood (Seymour and Jackson 1996).…”

Section: Chick Survivalmentioning

confidence: 99%

Reproductive success and habitat selection of sharp-tailed grouse (Tympanuchus phasianellus) in the Peace River region, northeast British Columbia.

Goddard¹

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Survival of Wood Duck and Mallard Broods in North-Central Minnesota

Cited by 106 publications

References 11 publications

Survival of Mallard Broods in South-Central North Dakota

Survival of Mallard Broods in South-Central North Dakota

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

Reproductive success and habitat selection of sharp-tailed grouse (Tympanuchus phasianellus) in the Peace River region, northeast British Columbia.

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