WILD 3580 1st Edition Lecture 33Outline of Last Lecture I. Colors II. Bird vocalizations III. Song ProductionOutline of Current Lecture I. Why do birds sing?II. Learning to sing III. Non-vocal sounds Current LectureI. Why do birds sing?- Functions1. Reproductive functions2. Social functions a. Hold flock togetherb. Convey information about food 3. Individual functions a. Perfect the song through practice II. Learning to sing - Vocalizations1. Inherited 2. Learned 3. Invented - Syllable: specific parts of the song - Syntax: arrangement of the syllables o A song is “correct” when is receives a response - 4 stages in learning the song 1. Critical learning period a. Period early in life when it must hear the adult song 2. Silent period a. Song is stored; not attempting to sing for later use These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.3. Subsong perioda. “practice” periodb. Using innate ability c. Plastic song: constantly changing and becoming more like the adult song 4. Song Crystallization perioda. Transformation of the plastic song into the adult song b. Uses the song it heard during the critical learning period III. Non-vocal sounds- Ex. Storks and heronso Mandible clapping - Ex. Ruffed Grouseo Drumming - Mourning Doveso Wing
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