Abstract
Within-pair activity was highest several days before egg-laying started and during morning and evening hours. Extra-pair events also peaked just before egg-laying but showed no distinct diurnal pattern. Pairs on average copulated 21-22 times per clutch. Males followed their females more than the reverse, but spent only a third of the time within 10m of their mates. Male presence on the territory deterred potential extra-pair events, and although males' were on their territories for 94% of their day, they did leave, apparently to forage, on occasion. Extra-pair events involving these males, females were more likely during these departures. Apparently as a consequence, males went on fewer forays when their female was most fertilizable. Males did not copulate with their females more often than normal just before or after forays or intrusions. Pairs that copulated more often had fewer extra-pair fertilizations in their broods, but no other behaviours were correlated with paternity. -from Author
| Original language | English |
|---|---|
| Pages (from-to) | 267-290 |
| Number of pages | 24 |
| Journal | Behaviour |
| Volume | 124 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - 1993 |
Bibliographical note
Funding Information:1) This study would not have been possible without the hard work of C. BUTLER, C. CORSON, D. CHRISTIAN, K. GASTREICH, and D. HARRISOiNn the field, S. C. WESTNEAinT transcribing tapes, and L. BREENan d G. CRUTCHEiRn the lab. I benefitted from the helpful advice and support of B. JOHNSON, N. HAIRSTONJr,. , and C. F. AQUARDO. A. B. CLARK provided invaluable information on the Ithaca blackbirds. T. R. BIRKHEAaDn d two anonymous reviewers improved the manuscript by their helpful comments. This project was supported by NSF grants BSR 8700159 and BSR 8906562, by a NIH grant to C. F. AQUADRaOn d by Cornell University and University of Kentucky.
Funding
1) This study would not have been possible without the hard work of C. BUTLER, C. CORSON, D. CHRISTIAN, K. GASTREICH, and D. HARRISOiNn the field, S. C. WESTNEAinT transcribing tapes, and L. BREENan d G. CRUTCHEiRn the lab. I benefitted from the helpful advice and support of B. JOHNSON, N. HAIRSTONJr,. , and C. F. AQUARDO. A. B. CLARK provided invaluable information on the Ithaca blackbirds. T. R. BIRKHEAaDn d two anonymous reviewers improved the manuscript by their helpful comments. This project was supported by NSF grants BSR 8700159 and BSR 8906562, by a NIH grant to C. F. AQUADRaOn d by Cornell University and University of Kentucky.
| Funders | Funder number |
|---|---|
| National Science Foundation (NSF) | BSR 8700159, BSR 8906562 |
| National Institutes of Health (NIH) | |
| Cornell High Energy Synchrotron Source, Cornell University | |
| University of Kentucky |
ASJC Scopus subject areas
- Animal Science and Zoology
- Behavioral Neuroscience