Alpine Swift (Apus melba) Science Article 8 abstract The hypothesis that developmental instability is a cost of developmental plasticity isexplored using the alpine swift (Apus melba) as a model organism. In a previous study,experimentally parasitized nestlings showed a reduced wing growth rate in the first halfof the rearing period when parasites were abundant (i.e. peak […]
Category: Apodiformes
Covariation between egg size and rearing condition determines offspring quality: an experiment with the alpine swift
Alpine Swift (Apus melba) Science Article 1 abstract A positive correlation between egg size, early growth and nestling survival has been frequently reported in the ornithological literature. Albeit of interest, most of these studies did not determine whether the relationship between egg size, early growth and nestling survival was confounded by the quality of rearing […]
Female-biased mortality in experimentally parasitized Alpine Swift Apus melba nestlings
Alpine Swift (Apus melba) Science Article 2 abstract 1) Sex-biased mortality in adult vertebrates is often attributed to lower immunocompetence and higher parasite susceptibility of males. Although sex-specific mortality has also been reported during growth, the importance of sex-specific immunocompetence and parasite susceptibility in explaining male-biased mortality remains ambiguous in growing individuals because of potentially […]
Braces Emerald (Chlorostilbon bracei)
The story Although there is indeed fairly general acceptance of Brace’s Emerald as a valid species, the same doubts hang about it as in the aforementioned cases, and the present author considers it to be a rather poorly established species. However, a number of hummingbird experts have spoken in its favour and in line with […]
Starry Owlet-nightjar (aegotheles tatei)
[order] APODIFORMES | [family] aegothelidae | [latin] aegotheles tatei | [UK] Starry Owlet-nightjar | [FR] aegothele de Tate | [DE] Kauzchenschwalm | [ES] Egotelo de Rand | [NL] Subspecies Monotypic species Physical charateristics Similar to Feline Owlet-Nightar but smaller, less white markings and rufous-brown underwings. Tail pattern also differs. wingspan min.: 0 cm wingspan max.: […]
Moluccan Owlet-nightjar (aegotheles crinifrons)
[order] APODIFORMES | [family] aegothelidae | [latin] aegotheles crinifrons | [UK] Moluccan Owlet-nightjar | [FR] aegothele Moluques | [DE] Molukkenschwalm | [ES] Egotelo Moluqueno | [NL] Molukse Dwergnachtzwaluw Subspecies Monotypic species Physical charateristics Uperparts vrmiculated grey-brown, underparts pale with dark spots. Has a brown and rufous morph, probably with intermediates. has a very distinct call, […]
Mountain Owlet-nightjar (aegotheles albertisi)
[order] APODIFORMES | [family] aegothelidae | [latin] aegotheles albertisi | [UK] Mountain Owlet-nightjar | [FR] aegothele montagnard | [DE] Bergschwalm | [ES] Egotelo Montano | [NL] Bergdwergnachtzwaluw Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Aegotheles albertisi AU New Guinea Aegotheles albertisi albertisi Vokelkop Pen. (nw New Guinea) Aegotheles albertisi salvadorii […]
Vogelkop Owlet-nightjar (aegotheles affinis)
[order] APODIFORMES | [family] aegothelidae | [latin] aegotheles affinis | [UK] Vogelkop Owlet-nightjar | [FR] aegothele de Vogelkop | [DE] Vogelkopschwalm | [ES] Egothelo Vogelkop | [NL] Vogelkop Dwergnachtzwaluw Subspecies Monotypic species Physical charateristics Uniformely sooty brown to black coloration with light-brown bars. Distighuished by lookalike Barred Owlet-Nightjar by more rounded wings. wingspan min.: 0 […]
New Caledonian Owlet-nightjar (aegotheles savesi)
[order] APODIFORMES | [family] aegothelidae | [latin] aegotheles savesi | [UK] New Caledonian Owlet-nightjar | [FR] aegothele caledonien | [DE] Schwarzrucken-Schwalm | [ES] Egotelo de Nueva Caledonia | [NL] Nieuwcaledonische Dwergnachtzw Subspecies Monotypic species Physical charateristics Large, dark owlet-nightjar. Plumage rather uniformly vermiculated grey-brown and black. Structurally distinct with short rounded wings, long, slightly rounded […]
Wallaces Owlet-nightjar (aegotheles wallacii)
[order] APODIFORMES | [family] aegothelidae | [latin] aegotheles wallacii | [UK] Wallaces Owlet-nightjar | [FR] aegothele de Wallace | [DE] Fleckenschwalm | [ES] Egotelo de Wallace | [NL] Wallace’s Dwergnachtzwaluw Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Aegotheles wallacii AU New Guinea Aegotheles wallacii gigas s New Guinea, Weyland Mts. […]