Nest Site Characteristics and Nest Success of Spruce Grouse

Keppie, Daniel M.; Herzog, Patrick

doi:10.2307/3800828

Cited by 30 publications

(25 citation statements)

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“…Other nests were beneath logs and juniper (Juniperus communis) mats and in willow clumps (Keppie and Herzog 1978). Structurally, the tree component of jack pine stands looked similar to lodgepole pine forest (Figs.…”

Section: Nest Site Characteristicsmentioning

confidence: 98%

“…Wallestad and Pyrah (1974) and Keppie and Herzog (1978) reported that nest success was associated directly with estimates of concealment. But it appears unknown what elements at nest sites provide concealment, how they influence nest success, and whether site selection occurs at all.…”

Section: Introductionmentioning

confidence: 95%

“…The number of random points chosen in Alberta greatly exceeded the number of nests; methods in Eberhardt (1978) were used to determine the number of random points in New Brunswick. Two measurements were used to determine degree of concealment at nests: (1) subjective visual ratings were recorded at nests; percent lateral and percent overhead concealment were estimated independently, then combined into an overall concealment point rating (Keppie and Herzog 1978); (2) at canace nests, a cover board (Jones 1968) consisting of twenty-five 3 -2-cm squares painted in a checkerboard fashion also was used. It was situated vertically at three different angles around each nest perimeter and viewed horizontally from about 3 m. The number of visible squares was subtracted from 25, summed over the three positions to obtain a lateral concealment rating out of a possible 75 squares.…”

Section: Introductionmentioning

confidence: 99%

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Vegetative structure, concealment, and success at nests of two races of spruce grouse

Redmond¹,

Keppie²,

Herzog³

1982

Can. J. Zool.

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1982.Vegetative structure, concealment, and success at nests of two races of spruce grouse. Can. J. Zool. 60: 670-675.Vegetative structure, concealment, and success were compared at nests of two races of spruce grouse: Canachites canadensis canace (N = 37) in New Brunswick (1976-1980) and C . c . franklinii (N = 67) in Alberta (1970)(1971)(1972)(1973)(1974)(1975). Nests of both races were similar in design and were often located near the bole of trees or near the perimeter of tree or shrub clumps. Female spruce grouse, particularly in New Brunswick, nest in an array of stand types, densities, and ages. Hens may use certain structural cues when choosing areas to nest since canopy closure, density and percent ground cover, and density of trees at nest sites were different from what was generally available. Concealment and success at nests of canace were significantly greater than atfranklinii nests. We attribute these differences partially to the absence of a uniform dense layer of dwarf shrub ground vegetation in Alberta. Nests of adults of both races were better concealed than nests of yearlings and well-concealed nests usually were successful. REDMOND, G. W., D. M. KEPPIE et P. W. HERZOG. 1982. Vegetative structure, concealment, and success at nests of two races of spruce grouse. Can. J. Zool. 60: 670-675. La composition de la vigktation, le camouflage du nid et le succks de la nidation ont Ct C compares chez deux races de tCtras des savanes, Canachites canudensis canuce (N = 37) au Nouveau-Brunswick (1976-1980) et C . c . franklinii (N = 67) en Alberta (1970)(1971)(1972)(1973)(1974)(1975). Les nids sont semblables chez les deux races et sont souvent situCs prks du tronc d'un arbre ou prks de la p6riphCrie de bosquets d'arbres ou d'arbustes. Les tetras femelles, particulikren~ent au Nouveau-Brunswick, construisent leur nid dans une variCtC de types, de densitCs et d'tiges de boisCs. La femelle utilise peut-&re certains indices lors du choix d'un site, puisque la couverture, le pourcentage et la densit6 des couvre-sol et la densite des arbres aux sites de nidation diffkrent de ce qui est gCnCralement disponible. Le camouflage du nid et le succks de la nidation sont significativement meilleurs chez C . c . canace que chez C . c . franklinii. Ces diffkrences sont probablement attribuables en partie h l'absence d'une couche uniforme et dense de vCgCtation arbustive naine en Alberta. Chez les deux races, les nids des adultes sont mieux camoufles que ceux des oiseaux de l'annCe et un bon camouflage assure ordinairement le succks de la nidation.[Traduit par le journal]

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Section: Nest Site Characteristicsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vegetative structure, concealment, and success at nests of two races of spruce grouse

Redmond¹,

Keppie²,

Herzog³

1982

Can. J. Zool.

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“…Les connaissances acquises par ces recherches concernent entre autres l'alimentation de l'oiseau (Jonkel et Gréer 1963 ;Ellison 1966 ;Pendergast et Boag 1970 ;Ellison 1976 ;Herzog 1978 ;Allan 1985 ;Hohf et al 1987 ;Naylor et Bendell 1989 ;DeFranceschi et Boag 1991), ses déplacements et mouvements migratoires (Schroeder 1985 ;Boag et Schroeder 1992), ses comportements sociaux (Ellison 1973 ;Herzog et Boag 1978 ;Nugent et Boag 1982 ;Keppie 1987a), ainsi que sa reproduction et sa productivité (Pendergast et Boag 1971 ;Keppie et Herzog 1978 ;Keppie 1982 ;Remond et al 1982) Les besoins du tétras du Canada en terme d'habitat sont assez bien connus. Le tétras est dépendant des forêts de conifères pour satisfaire à ses besoins vitaux (Turcotte et al 1993 Mill.)…”

Section: 2-le Tétras Du Canadaunclassified

Comparaison de l'utilisation de différents types de structures de forêt résiduelle par le tétras du Canada (falcipennis canadensis) /

Girard¹

1999

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“…The selection of the nest-site is based on environmental abiotic and biotic characteristics, resulting in a non-random spatial distribution of nests (Block and Brennan 1993;Scarton and Valle 1996). This selected site should provide a location where adults, eggs, and chicks may be sheltered from environmental stresses (Ricklefs and Hainsworth 1969;Walsberg 1985) and protected from predators (Keppie and Herzog 1978;Martin and Roper 1988). The settling decision is a crucial stage, since the nest-site selection will tie birds to a single location from egg-laying until chicks fledge.…”

Section: Introductionmentioning

confidence: 99%

Microhabitat selection by Kelp Gulls, Larus dominicanus, in Patagonia, Argentina

Borboroglu

Yorio

2004

Emu - Austral Ornithology

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We studied the microhabitat selection of Kelp Gulls, Larus dominicanus , at 16 colonies along 2500 km of coastline in Patagonia, Argentina, between 1998 and 2001. We quantified 15 habitat variables at 553 nest-sites and at 422 random points. Kelp Gulls selected particular nest-sites from the available habitat. They selected sites with higher cover within 1 m of the nest, closer to the nearest vegetation, but further from the nearest clearing than random points. Slope also showed a clear pattern, where in most colonies, mean nest values were lower than at random points. The variability and diversity of the selected nest-site features indicate that Kelp Gulls are generalists with respect to nest-site habitat selection. Although Kelp Gulls have preferences for certain nest-site characteristics, these preferences are flexible enough to allow them to take advantage of different microhabitats within the diversity of habitat types observed in their colonies.

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Nest Site Characteristics and Nest Success of Spruce Grouse

Cited by 30 publications

References 0 publications

Vegetative structure, concealment, and success at nests of two races of spruce grouse

Vegetative structure, concealment, and success at nests of two races of spruce grouse

Comparaison de l'utilisation de différents types de structures de forêt résiduelle par le tétras du Canada (falcipennis canadensis) /

Microhabitat selection by Kelp Gulls, Larus dominicanus, in Patagonia, Argentina

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