This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: . most concentrated in retina, n those other two pineal. Period, clock, banal. As day length grows longer 12-14 hrs. the light period and the light peak (when you are absolutely sensitive to light. When u have the pulse of light, its called the clock shift. A single pulse of light can trigger spring like response in birds. Clock-shift: changing the SOME TROPICAL BIRDS DO NOT FOLLOW 12 MO CYCLES. SOOTY TERNS ON ASCENSION ISLAND ON THE EQUATOR BREED EVERY IN BIRDS: THE TESTES ENLARGE GREATLY DURING THE BREEDING SEASON. REPRESENTS A NEW PUBERTY EVERY YEAR....
View Full Document
This note was uploaded on 04/08/2011 for the course POUL 3123 taught by Professor Navara during the Spring '09 term at University of Georgia Athens.
- Spring '09