Sharp, P J <br/><br/>
A comparison of the responses of captive willow ptarmigan (Lagopus lagopus lagopus), red grouse (Lagopus lagopus scoticus), and hybrids to increasing daylengths with observations on the modifying effects of nutrition and crowding in red grouse.  [electronic resource] 

 -  General and comparative endocrinology  Oct 1981 
 - 181-8 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0016-6480 
<br/><br/><label>Standard No.: </label>10.1016/0016-6480(81)90103-9  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Birds--physiology<br/>Crowding--physiology<br/>Dietary Proteins--administration & dosage<br/>Feathers--physiology<br/>Female<br/>Light<br/>Luteinizing Hormone--blood<br/>Male<br/>Oviposition--radiation effects<br/>Periodicity