Naslov
Breeding characteristics of the barn swallow (Hirundo rustica) in NW Croatia

Autori
Dolenec, Zdravko

Izvornik
Natura Croatica (1330-0520) 11 (2002), 4; 439-445

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
barn swallow; Hirundo rustica; position of nest; egg characteristics; laying order; NW Croatia

Sažetak
The research was carried out in the village of Mokrice in NW Croatia during 1998-1999. Egg length averaged 19.16 .., egg breadth 13.72 mm, egg volume 1840.8 mm3, egg shape index 1.40 and egg weight 1.81 g (during both years). The nests were situated at a height of 1.5-4.5 m above ground (mean = 2.5 m). I found 2-7 eggs per nest, on average 4.56 eggs. A statistically significant positive correlation was found between mean egg volume and egg breadth, as well as length, egg length and egg shape index, egg length and egg breadth ; whereas a statistically significant negative correlation was observed between egg breadth and egg shape index. The laying order did not affect egg dimensions (length, breadth, volume, shape index, all p>0.05). The %D-value is 2.31.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

Napomena
Časopis je citiran u Pravilniku NN 2/97

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