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Repeatability of egg dimensions within the clutches of Bearded Tit Panurus biarmicus

100%

Surmacki A., Stepniewski J., Zduniak P.

Acta Ornithologica

2003

tom 38

nr 2

The variation in size and shape of Bearded Tit eggs was investigated in the Wielkopolska Region of western Poland in 1988-1992 and 1997-2000. The mean clutch size was 5.47 (95% CL: 5.25-5.70, n = 99), and differed markedly from year to year. Coefficients of variations for the mean egg characteristics in a clutch ranged from 1.91 (breadth) to 4.90 (volume). No significant correlation between egg length and breadth was found. Repeatability estimates were 0.50, 0.48, 0.50, 0.47 for length, breadth, volume and elongation index, respectively. The results suggest a relatively low heritability of egg dimensions in the population studied.

What do data from birdwatchers notepads tell us? The case of the Bearded Tit [Panurus biarmicus] occurrence in Western Poland

84%

Surmacki A.

The Ring

2005

tom 27

nr 1

A survey of the Bearded Tit Panurus biarmicus during the non-breeding season in a landscape of Western Poland

84%

Surmacki A., Stepniewski J.

Acta Ornithologica

2003

tom 38

nr 1

Ograniczanie wyników

2 Acta Ornithologica

1 The Ring

3 Surmacki A.

2 Stepniewski J.

1 Zduniak P.

1 2005

2 2003

Wyniki wyszukiwania

Repeatability of egg dimensions within the clutches of Bearded Tit Panurus biarmicus

What do data from birdwatchers notepads tell us? The case of the Bearded Tit [Panurus biarmicus] occurrence in Western Poland

A survey of the Bearded Tit Panurus biarmicus during the non-breeding season in a landscape of Western Poland