Breeding biology of the Siberian TitParus cinctus in Finland

Saari, Lennart; Pulliainen, Erkki; Hildén, Olavi; Järvinen, Antero; Mäkisalo, Ilmari

doi:10.1007/bf01649851

Cited by 8 publications

(8 citation statements)

References 7 publications

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“…For excavation and clutch size the given value is the mean of population means, and range is given in the parentheses. Data were compiled from Cramp and Perrins (1993), Delmee et al (1972), Ekman and Askenmo (1986), Kiziroglu (1982), Kovshar (1979), Lens et al (1994), Lö hrl (1991), Ludescher (1973), Ojanen and Orell (1985), Orell and Ojanen (1983a, b), Pravosudov (1987), Saari et al (1994). Fig.…”

Section: Methodsmentioning

confidence: 99%

Sensitivity of comparative analyses to population variation in trait values: clutch size and cavity excavation tendencies

Mönkkönen¹,

Martin²

2000

Journal of Avian Biology

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Importance of within-species (population) variation in trait values to correlations of traits among species has received very little attention in comparative analyses. We use randomization and bootstrapping techniques to provide a sensitivity analysis of the influence of population variation on correlations between clutch size and propensity to excavate. These traits are predicted to be negatively correlated under the limited breeding opportunities hypothesis, but opposing results have been found by two studies using different population estimates for western Palearctic Paridae. Our analyses support the limited breeding opportunities hypothesis and suggest low sensitivity to within-species variation in trait values. Yet, a small proportion of population data provide non-significant results. Checking for the effects of this variation on the postulated association between traits is necessary in comparative studies if one wishes to avoid type I and type II errors.

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Section: Methodsmentioning

confidence: 99%

Sensitivity of comparative analyses to population variation in trait values: clutch size and cavity excavation tendencies

Mönkkönen¹,

Martin²

2000

Journal of Avian Biology

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“…According to Pravosudov (1987), Siberian tits never excavate their own cavities. Likewise, Saari et al (1994) could not verify that any of the Siberian tit nests were in cavities made by tits themselves, although two of 78 were assumed to be. Therefore, there are good reasons to treat these two species as dependent on existing holes.…”

mentioning

confidence: 99%

Clutch Size and Cavity Excavation in Parids (Paridae): The Limited Breeding Opportunities Hypothesis Tested

Mönkkönen

Orell

1997

The American Naturalist

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“…The Siberian Tit breeds almost exclusively in existing holes (Saari et al 1994, Monkkonen & Orell 1997.…”

Section: Breed In Finlandmentioning

confidence: 99%

“…Contrary to managed forests, virgin forest contains numerous dead and decaying trees that provide suitable nest-sites for the species. Although the breeding densities are relatively low in Finland (Saari et al 1994), it has been possible to attract sufficient Siberian Tits to occupy nestboxes for long-term population studies (Saari et al 1994, Veistola et al 1997b. Talung into account the conservation status of the species, it is of utmost importance to know how reproductive success of the Siberian Tit varies with habitat, i.e.…”

Section: Breed In Finlandmentioning

confidence: 99%

“…According to line-transect censuses, the breeding density ranges in Finnish Forest Lapland (Varrio & Vuotso; Fig. 1) from 0.4 pairs/km2 (managed forests) to more than four pairs/km* (dry pine forests and moist spruce-birch forests; Virkkala 1987a, 1987b, Saari et al 1994 without nestboxes. In nestbox studies, higher densities than ours have been found.…”

Section: Habitat Qualitymentioning

confidence: 99%

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High survival rate and site fidelity in the Siberian Tit Parus cinctus, a focal species of the taiga

Orell

Lahti

Matero

1999

Ibis

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The Siberian Tit Parzis cincttrs population of Finland, and probably of the whole of Fennoscandia, has declined dramatically during this century. Understanding its population dynamics is essential for its conservation. We studied annual survival rate and dispersal distance of both breeding and fledgling Siberian Tits during 1989-97 in a moderately managed forest habitat near the southern border of its range in Kuusamo, northeastern Finland. Breeding density was low, averaging 0.51 pairs/& in a nestbox area of about 42 km2. This was probably an underestimate, because we did not search for nests in natural holes. However, following its population decline, overall densities at the southern border of the range are low. The study area was, however, suitable breeding habitat as reflected by their high nesting success. Brood size at fledging averaged 7.45 young, and reproductive output was 6.16 young per breeding pair, including failed nests. Clutch size adjustment was successful among pairs producing fledglings because, on average, 92.6% of the eggs laid produced young in successful broods. Median distance between consecutive breeding attempts was 100 m for both males and females (range 0-2500 m and 0-6000 m, respectively). Natal dispersal distance was significantly longer in females than in males. We applied Cormack-Jolly-Seber modelling to estimate survival and recapture probabilities separately. Survival of breeding birds was not sex-related, averaging 0.69 annually. Some of the ringed fledglings (3.00/0) were later captured as breeders in the area. This is an underestimate of local survival rate due to incomplete recapturing of breeding birds. The implications of these results with respect to the conservation status of the

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Breeding biology of the Siberian TitParus cinctus in Finland

Cited by 8 publications

References 7 publications

Sensitivity of comparative analyses to population variation in trait values: clutch size and cavity excavation tendencies

Sensitivity of comparative analyses to population variation in trait values: clutch size and cavity excavation tendencies

Clutch Size and Cavity Excavation in Parids (Paridae): The Limited Breeding Opportunities Hypothesis Tested

High survival rate and site fidelity in the Siberian Tit Parus cinctus, a focal species of the taiga

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