Nest Site Selection Influences Cinnamon Teal Nest Survival in Colorado

Setash, Casey M.; Kendall, William L.; Olson, David M.

doi:10.1002/jwmg.21818

Cited by 6 publications

(10 citation statements)

References 85 publications

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“…We also found that ducks preferred to nest in intermediate wheatgrass to other plants. In Colorado, cinnamon teal nested in grassy areas and avoided forbs, a trait that contributed to nest success; teal also exhibited a preference for Baltic rush ( Juncus arcticus ; Setash et al 2020).…”

Section: Discussionmentioning

confidence: 99%

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Nest‐site selection by cinnamon teal and other ground‐nesting ducks in Great Salt Lake wetlands

Bell

Conover

2023

Wildlife Society Bulletin

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Ground-nesting ducks can reduce nest depredation by selecting nest sites where local physical structures or vegetation provide olfactory or visual concealment. We evaluated nestsite selection by comparing duck nests to random sites during 2019 and 2020 in the impounded wetlands of Great Salt Lake (GSL), Utah, USA. During wet springs, most of the wetlands are underwater, leaving only the dams available as nesting substrate. We located the nests of 399 cinnamon teal (Spatula cyanoptera), 137 mallards (Anas platyrhynchos), and 162 gadwalls (Mareca strepera) on the dams. At nest and random sites, we measured overhead concealment, lateral concealment, average height of vegetation in the nest patch, standard deviation of vegetation height in the nest patch, tallest vegetation within 1 m of nest, dam width, and distance from the nest to the road along the center of the dam. We found that mallards and gadwalls did not select for any of these characteristics. Cinnamon teal selected for nest sites that had more overhead concealment. We also found mixed evidence that cinnamon teal selected nest sites where dams were wider.All species also favored heterogeneous patches of vegetation for nesting over homogenous ones. Duck nests had a clumped distribution in wetlands that contained colonies of American avocets (Recurvirostra americana), black-necked stilts (Himantopus mexicanus), and common terns (Sterna hirundo), with nests located inside the colonies, but showed a random distribution in other wetlands. Prior to 1980, approximately

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Section: Discussionmentioning

confidence: 99%

“…Limited knowledge of cinnamon teal nest site selection has hindered efforts to create suitable nesting habitat for cinnamon teal (Setash et al 2020). We examined nest‐site selection of waterfowl using GSL wetlands.…”

mentioning

confidence: 99%

Nest‐site selection by cinnamon teal and other ground‐nesting ducks in Great Salt Lake wetlands

Bell

Conover

2023

Wildlife Society Bulletin

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“…The ability to estimate survival during different periods (i.e. states) for each individual is important for comparing survival among breeding stages at any given date (Arnold et al 2012, Setash et al 2020). The model I used was a straightforward, intuitive way of including breeding stage because each day can be assigned a different level of a categorical variable.…”

Section: Discussionmentioning

confidence: 99%

Are breeding activities risky for northern bobwhites? An assessment of survival costs of reproduction

Behney

2023

Journal of Avian Biology

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Behaviors associated with breeding can increase mortality risk. This increased risk can be thought of as a cost of reproduction. Increased movements prior to breeding are common as individuals search for food and breeding sites. These increased movements are thought to entail greater predation risks as individuals travel through unfamiliar areas but few studies have looked at how these prebreeding movements affect survival, especially at a fine temporal resolution. Costs of reproduction may also occur during reproduction. For birds, incubation and brood-rearing can increase predation risk because individuals spend most of their time at nest sites or with broods, which may make them more easily detected and captured by predators. Using time-and individual-specific predictors of survival, I examined the relationship between survival, movements, habitat use and breeding status of northern bobwhites Colinus virginianus in Colorado, USA. I found that prebreeding ranges were larger for breeders (29 ha) than non-breeders (18.7 ha) but daily movement distance was not different (163 m). Range size did not affect survival; however, longer recent daily movement distances (within 10 days) resulted in higher survival. Breeding status also affected survival; laying individuals experienced the highest daily survival rates followed by incubating, non-breeding and brood-rearing individuals. Overall, there appears to be a survival cost of reproduction for individuals during brood-rearing, but I found no evidence that increased movements results in decreased survival.

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“…When we located a nest, we recorded GPS coordinates (Garmin GPSMAP 64sx GPS: Garmin, Olathe, KS, USA), counted eggs, and estimated incubation stage (Rush et al 2007). As part of a concurrent nest survival study (Dykstra 2023), we checked nests every 5–7 days (Borgo and Conover 2016, Setash et al 2020).…”

Section: Methodsmentioning

confidence: 99%

Mallard brood movements and survival in an urbanized landscape

Dykstra,

Huang,

Rittenhouse

2024

J Wildl Manag

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When selecting a nest site, mallards (Anas platyrhynchos) balance differing habitat requirements for the nesting and brood‐rearing periods, such that the juxtaposition of these habitats in the landscape may influence the female's reproductive strategy and reproductive success. Mallard populations in the northeastern United States have declined since the mid‐1990s, and increasing urban development in this region may pose risks to broods and cause high duckling mortality. We assessed mallard brood and duckling survival in the urbanized landscapes of Connecticut, USA, and evaluated whether differences in brood movements, home ranges, and habitat use in urbanized areas influence brood survival. We monitored 32 mallard broods from females with global positioning system (GPS) transmitters in Connecticut in 2021 and 2022. Apparent brood survival to 30 days (0.48, n = 29 broods) was comparable to previous estimates in the Northeast (range = 0.21–0.72), but individual duckling survival (0.18, n = 257 ducklings) was lower than many previous estimates for this region (range = 0.14–0.44), suggesting this parameter warrants continued evaluation because it may be contributing to population declines in Connecticut and the greater Northeast region. Mallard females demonstrated different reproductive strategies and seemed to prioritize either high‐quality nesting habitat or proximity to high‐quality brood‐rearing habitat. High‐quality nesting habitat is not necessarily near high‐quality brood‐rearing habitat, and 61% (17/28) of females moved their ducklings an average of 1.1 ± 0.9 km (SD) shortly after hatch to a brood‐rearing site, often traveling along small streams. A similar proportion of successful (9/12) and failed (7/13) broods moved. We provide evidence of limited availability of brood‐rearing habitat, as females moved long distances to brood‐rearing wetlands and only 1 brood made additional inter‐wetland moves. Management actions that create or modify nesting and brood‐rearing habitat should consider connectivity between these sites; females may choose to nest away from wetlands to minimize exposure to predators but may depend on small streams for travel to brood‐rearing wetlands.

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Nest Site Selection Influences Cinnamon Teal Nest Survival in Colorado

Cited by 6 publications

References 85 publications

Nest‐site selection by cinnamon teal and other ground‐nesting ducks in Great Salt Lake wetlands

Nest‐site selection by cinnamon teal and other ground‐nesting ducks in Great Salt Lake wetlands

Are breeding activities risky for northern bobwhites? An assessment of survival costs of reproduction

Mallard brood movements and survival in an urbanized landscape

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