I Know Why the Caged Bird Sings

Courting bird sings with stridulating wing feathers.

In birds and other vertebrates, most acoustic signals are produced pneumatically by moving air through a vocal apparatus. Here we describe a unique mechanism used to produce a tonal acoustic signal in vertebrates. Video recordings of the courtship displays of male Club-winged Manakins, Machaeropterus deliciosus, reveal that males produce sustained harmonic tones through interactions among oscil...

For Whom The Bird Sings : Context - Dependent Gene

known about the brain circuits that mediate song acquiMale zebra finches display two song behaviors: disition and production. Referred to collectively as “the rected and undirected singing. The two differ little in song system,” these circuits consist in male zebra the vocalizations produced but greatly in how song is finches of a posterior motor pathway necessary for song delivered. “Directed”...

For Whom The Bird Sings Context-Dependent Gene Expression

Male zebra finches display two song behaviors: directed and undirected singing. The two differ little in the vocalizations produced but greatly in how song is delivered. "Directed" song is usually accompanied by a courtship dance and is addressed almost exclusively to females. "Undirected" song is not accompanied by the dance and is produced when the male is in the presence of other males, alon...

"Why don't I do what I know I should?" Finding the motivation to be better.

I Know What I Know

How important is software construction? Software construction has been the awkward stepchild of software engineering for decades. This puzzles me because software construction is the only activity that’s guaranteed to be done on every project. Code is the center of the software universe. Process advocates tend to downplay coding, focusing more on the documentation that occurs before and after c...