.... To test this, we combined field manipulations, captivity measurements and geolocation data. We advanced and delayed hatching dates in pied flycatchers ( Ficedula hypoleuca ) and measured how the timing of subsequent stages (male moult and migration) were affected. There was no causal effect of manipulated...

...://www.biologists.com/user-licence-1-1/ Summary: Birds provisioning offspring can either increase metabolic processes or reduce energy expenditure on maintenance. Here, a song bird is shown to do the latter, but only in the short term. Ficedula hypoleuca Increased-intake hypothesis Compensation...

...-directed escape flights of 19 and 22 pied flycatchers ( Ficedula hypoleuca ) with and without simulated molt gaps, respectively. We then reconstructed the three-dimensional body and wing movements throughout each maneuver. By comparing flights with and without gaps, we determined how wing molt gaps...

... acute stress on offspring phenotype in free-living pied flycatchers ( Ficedula hypoleuca ) by administering adrenocorticotropic hormone (ACTH) to nestlings for 6 days. The results showed that frequent induction of stress responses by ACTH injections, independent of parental care, adversely affected...

...Henrik Mouritsen; Ole Næsbye Larsen SUMMARY This paper investigates how young pied flycatchers, Ficedula hypoleuca , and blackcaps, Sylvia atricapilla , interpret and use celestial cues. In order to record these data, we developed a computer-controlled version of the Emlen funnel, which enabled us...

...Henrik Mouritsen; Ole Næsbye Larsen ABSTRACT The present study tested whether young Scandinavian pied flycatchers, Ficedula hypoleuca , would direct their orientation back towards their southwest-directed migratory route in autumn if displaced by the maximal biologically realistic distance due...

... für Biologische Kybernetik, Spemannstrasse 38, D-72076 Tübingen, Germany. 16 05 1995 © The Company of Biologists Limited 1995 pineal gland melatonin melatonin binding sites visual system pied flycatcher Ficedula hypoleuca zebra finch Taeniopygia guttata...

... information on the migratory course as a direction with respect to the geomagnetic field or in the time programme controlling the specific migratory direction at a given time. 24 5 1994 ©The Company of Biologists Limited 1994 pied flycatcher Ficedula hypoleuca pineal gland melatonin...