Behavioral aspects of chickadee hybridization.
In this chapter, we summarize information from our studies of the hybrid zone between blackcapped and Carolina chickadees in south-eastern Pennsylvania. Our focus is on patterns of vocal variation in relation to among- and within-population genetic variation. Primary questions we address include: (1) What song and call types are produced within this hybrid zone? (2) Are the vocalization types congruent with one another within individuals? (3) What insights might we derive from these patterns regarding mechanisms of hybridization in chickadees? We then review available information, and opportunities for further research, concerning patterns and mechanisms of hybridization among Parids of both North America and Eurasia.
|Main Author:||Curry, Robert L.|
|Other Authors:||Rossano, Lindsay M., Reudink, Matthew W.|