Common Yellowthroat (Geothlypis trichas) Science Article 2 abstract Many socially monogamous species have sexually dimorphic traits. The evolution of these traits is puzzling as sexual selection is often thought to be relatively weak in monogamous species KEVIN J. THUSIUS et al., ANIMAL BEHAVIOUR, 2001, 62, 435-446 Download article download full text (pdf)
The duration of parental care in the Common Tody Flycatcher
Common Tody-Flycatcher (Todirostrum cinereum) Science Article 1 abstract The nesting habits of the Common Tody Flycatcher (Todirostrum cinereum)are now well known. Skutch (1930,Auk 47:313-322;1960, Pacific Coast Avifauna 34: 475-489) published two detailed life histories of the race finitimum in Panama and Costa Rica, and I (Haverschmidt 1968, Birds of Surinam, Edinburgh, Oliver and Boyd, p. […]
Annahme von Nisthilfen durch den Mauersegler (Apus apus) in Berlin
Common Swift (Apus apus) Science Article 3 abstract We present results of the inspection of 1915 nest boxes for Common Swifts in Berlin in 2002. The aim of the studyis to determine factors influencing acceptance of artificial nest boxes. Two significant influences were thedistance of nest boxes from the original breeding grounds and the structure […]
Ultrastructure of the spermatozoon of Apus apus (Linnaeus1758), the common swift (Aves; Apodiformes; Apodidae), withphylogenetic implications
Common Swift (Apus apus) Science Article 4 abstract The spermatozoon of Apus apus is typical of non-passerines in many respects. Features shared with palaeognaths and the Galloanserae are the conical acrosome, shorter than the nucleus Barrie G. M. Jamieson and Sandro Tripepi, Acta Zoologica (Stockholm) 86: 239-244 (October 2005) Download article download full text (pdf)
Long-term decline in Common Swift Apus apus annual breeding success may be related to weather conditions
Common Swift (Apus apus) Science Article 1 abstract No abstract available (conversion errors, download pdf J. Rajchard, J. Prochazka & P. Kindlmann, Ornis Fennica 83:66-72. 2006 Download article download full text (pdf)
Dusk and dawn ascend of the swift, Apus apus L.
Common Swift (Apus apus) Science Article 2 abstract Radar observations on bird movements over The Netherlands in June andJuly revealed spectacular nocturnal Swift concentrations over the IJsselmeerand to a lesser extent above other waterbodies in and around TheNetherlands at some kilometres from coastlines. The Swifts performcharacteristic dusk and dawn ascends up to altitudes over 1800 […]
Distribution and behaviour of Common Scoter Melanitta nigra relative to prey resources and environmental parameters
Common Scoter (Melanitta nigra) Science Article 1 abstract Offshore wind farms are proposed around the coast of the UK and elsewhere in Europe. These sites tend to be located in shallow coastal waters that often coincide with areas used by over-wintering Common Scoter Melanitta nigra. A large-scale study was undertaken to ascertain the relationship of […]
Parental foraging strategies and feeding of nestlings in Common Redstart Phoenicurus phoenicurus
Common Redstart (Phoenicurus phoenicurus) Science Article 1 abstract Spatial foraging activity and feeding of broods was studied in nine pairs of CommonRedstart (Phoenicurus phoenicurus) breeding in nest boxes in pine forest. The effect ofnestling age on feeding rate was not significant. The number of feedings per chick wassimilar in small andmediumsize broods but decreased in […]
The evolutionary history of Eurasian redstarts, Phoenicurus
Common Redstart (Phoenicurus phoenicurus) Science Article 2 abstract The bird genus Phoenicurus comprises 10 to 11 species that occur from Europe through Asia. To resolve theirphylogenetic relationships, their phylogeography and the tempo of their evolution, the mitochondrial cytochrome-b gene wassequenced for 16 taxa. The Bayesian maximum likelihood tree and neighbor-joining dendrogram computed from the resultingdata […]
NOTES ON THE STRUCTURE OF THE UPPER EYELID OF POTOOS ( NYCTIBZUS )
Common Potoo (Nyctibius griseus) Science Article 1 abstract The Potoos (Nyctibius) have been studied by various authors, among them Goeldy ( 1896), Haverschmidt (1948, 1958), Borrero (1970), and Skutch (1970). The information presented in this study is based on both day and night observations of two captive and five free-ranging N. griseus (Common Potoo), one […]