Results 111 to 120 of about 38,928 (270)
Ibis, EarlyView.Birds may use their singing behaviours and song structure as agonistic signals in territorial encounters. We conducted an observational study to test this hypothesis in male Adelaide's Warblers Setophaga adelaidae, a tropical songbird that defends a territory year‐round.
Peter C. Mower +4 more
wiley +1 more source
Information on bird navigation obtained by British long range radars [PDF]
Radar observations of the migratory habits of passerine birds over a 10 year period are presented. The relationships between intensity of cloud cover and the frequency and density of migration are illustrated.
Evans, P. R.
core +1 more source
Human infections associated with wild birds. [PDF]
, 2008 IntroductionWild birds and especially migratory species can become long-distance vectors for a wide range of microorganisms. The objective of the current paper is to summarize available literature on pathogens causing human disease that have been ...
Bauchinger, Ulf +4 more
core +1 more source
Ibis, EarlyView.Based on distinctive morphological and vocal characters we describe a new species of jewel‐babbler (genus Ptilorrhoa) from the forested karst of the Southern Fold Mountains in Papua New Guinea. The description is based on camera trap data and is presented in accordance with ICZN Declaration 45.
Iain A. Woxvold +5 more
wiley +1 more source
Journal of Field OrnithologyAvian eggshell thickness is an important life history metric in birds and has broad applications across disciplines ranging from animal behavior to toxicology.
Carley R. Schacter +4 more
doaj +1 more source
Radar studies of bird migration [PDF]
Observations of bird migration with NASA radars were made at Wallops Island, Va. Simultaneous observations were made at a number of radar sites in the North Atlantic Ocean in an effort to discover what happened to those birds that were observed leaving ...
Williams, J. M., Williams, T. C.
core +1 more source
Reduced cooperative behavior as a cost of high testosterone in a lekking passerine bird [PDF]
, 2019 Ben J. Vernasco +3 more
openalex +1 more source
Journal of Anatomy, EarlyView.This report explores which muscles of the pectoral girdle are employed to allow birds to hold their wings horizontally with a level aerofoil surface during a glide. Abstract Whilst many birds glide briefly with wings held horizontally, some species maintain this posture for extended periods during soaring.
D. Charles Deeming, María Clelia Mosto
wiley +1 more source
Journal of Anatomy, EarlyView.Psittaciformes exhibit high levels of morphological diversity, particularly in skull and beak structure, previously linked to diet and body size. Although there were some levels of significance between diet and beak shape, body mass was a much stronger co‐variate. Diet is not determining beak shape within the clade.
Shannon L. Harrison +2 more
wiley +1 more source