Revealing a Circadian Clock in Captive Arctic-Breeding Songbirds, Lapland Longspurs (Calcarius lapponicus), under Constant Illumination

Daily Expression of Six Clock Genes in Central and Peripheral Tissues of a Night-Migratory SongBird: Evidence for Tissue-Specific Circadian Timing

(2013) Devraj Singh et al.   CHRONOBIOLOGY INTERNATIONAL

Avian circadian organization: A chorus of clocks

(2013) Vincent M. Cassone   FRONTIERS IN NEUROENDOCRINOLOGY

The Impact of Exposure to a Novel Female on Symptoms of Infection and on the Reproductive Axis

(2013) Patricia Castro Lopes et al.   NEUROIMMUNOMODULATION

Animal activity around the clock with no overt circadian rhythms: patterns, mechanisms and adaptive value

(2013) G. Bloch et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birds

(2013) S. S. Steiger et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Central and Peripheral Circadian Clocks in Mammals

(2012) Jennifer A. Mohawk et al.   Annual Review of Neuroscience

Biological Rhythms During Residence in Polar Regions

(2012) Josephine Arendt   CHRONOBIOLOGY INTERNATIONAL

Testing for associations between candidate genes for circadian rhythms and individual variation in sleep behaviour in blue tits

(2012) C. Steinmeyer et al.   GENETICA

Keeping Time Under the Midnight Sun: Behavioral and Plasma Melatonin Profiles of Free-Living Lapland Longspurs (Calcarius lapponicus) During the Arctic Summer

(2012) Noah T. Ashley et al.   Journal of Experimental Zoology Part A-Ecological Genetics and Physiology

Anticipating Spring: Wild Populations of Great Tits (Parus major) Differ in Expression of Key Genes for Photoperiodic Time Measurement

(2012) Nicole Perfito et al.   PLoS One

Daily body temperature rhythms persist under the midnight sun but are absent during hibernation in free-living arctic ground squirrels

(2011) C. T. Williams et al.   Biology Letters

Circadian and Seasonal Responses in Indian Weaver Bird: Subjective Interpretation of Day and Night Depends Upon Both Light Intensity and Contrast Between Illuminations

(2011) Rohit Kumar Pandey et al.   CHRONOBIOLOGY INTERNATIONAL

Bumblebee foraging rhythms under the midnight sun measured with radiofrequency identification

(2010) Ralph J Stelzer et al.   BMC BIOLOGY

Heritable circadian period length in a wild bird population

(2010) B. Helm et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Synchronization of Indian Weaver Bird Circadian Rhythms to Food and Light Zeitgebers: Role of Pineal

(2009) Sangeeta Rani et al.   CHRONOBIOLOGY INTERNATIONAL

Persistent diel melatonin rhythmicity during the Arctic summer in free-living willow warblers

(2009) Bengt Silverin et al.   HORMONES AND BEHAVIOR

Lab and field experiments: Are they the same animal?

(2009) Rebecca M. Calisi et al.   HORMONES AND BEHAVIOR

Duration of Melatonin Regulates Seasonal Changes in Song Control Nuclei of the House Sparrow, Passer domesticus: Independence from Gonads and Circadian Entrainment

(2008) Vincent M. Cassone et al.   JOURNAL OF BIOLOGICAL RHYTHMS

A Gentler Method to Raise Melatonin Levels in Birds

(2008) Wolfgang Goymann et al.   JOURNAL OF BIOLOGICAL RHYTHMS