Dispersal and age at first breeding in Norwegian Northern Lapwings (Vanellus vanellus)
Dispersal and age at first breeding were studied in Northern Lapwings from south Nor-way. In total, 40 adult birds (two males) and 114 chicks were colour-ringed. There were no sex differences in returning rates of birds ringed as chicks (n = 10 males and 14 females). Nor were there sex differences i...
| Main Authors: | , , |
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| Format: | Text |
| Language: | English |
| Published: |
2008
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.662.4316 http://ornisfennica.org/pdf/latest/2Lislevand.pdf |
| Summary: | Dispersal and age at first breeding were studied in Northern Lapwings from south Nor-way. In total, 40 adult birds (two males) and 114 chicks were colour-ringed. There were no sex differences in returning rates of birds ringed as chicks (n = 10 males and 14 females). Nor were there sex differences in natal and breeding dispersal distances. When sexes were pooled, natal dispersal was longer than breeding dispersal (median distances 160 m and 62 m, respectively). Also, colour-ringed females were more likely than males to breed in their second calendar year. Analyses of a separate data set of regular ring recoveries largely confirmed the relatively low degree of natal dispersal in Norwegian Northern Lapwings. In total, 72 % of birds reported during the breeding season (total n = 104) were found within 10 km from their natal site. Dispersal distances observed in Norway are sim-ilar to those reported from a comprehensive British study, and from Europe in general. 1. |
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