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Nest attendance , parental roles and breeding success in the Pallid Swift ( Apus pallidus )
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2015 |
| Abstract | Malacarne, G., M. Cucco & G. Orecchia (1992): Nest attendance, parental roles and breeding success in the Pallid Swift (Apus pallidus). Vogelwarte 36: 203-210. Parental behaviour in relation to breeding success in the Pallid Swift has been studied from 1987-1990. Observations at the nest of sexed pairs showed similar roles during incubation, although in the first ten days females incubated more than males. In 36% of pairs a partner incubated significantly more than the other, but more equitable pairs did not have aTiigher hatching success. Pairs hatching more eggs spent a higher percentage of time for incubation. During chick-feeding, males and females had similar nest visit frequencies. These frequencies were constant in the first month but then declined close to fledging. Pairs raising more chicks had higher feeding rates, but each chick received the same amount of food as chicks in smaller broods. The involvement of the male and the female in feeding young varied within pairs. The higher the pair effort, the higher the breeding success, but more equitable pairs did not have a higher reproductive success. These data are in line with a model of optimal parental investment in biparental species, where a lower effort of a member of the pair is compensated by higher involvement of the partner. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.zobodat.at/pdf/Vogelwarte_36_1991_0203-0210.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
