REJECTION OF ARTIFICIAL PARASITE EGGS BY GRAY KINGBIRDS IN THE BAHAMAS

Authors
BALTZ ME BURHANS DE
Citation
Me. Baltz et De. Burhans, REJECTION OF ARTIFICIAL PARASITE EGGS BY GRAY KINGBIRDS IN THE BAHAMAS, The Condor, 100(3), 1998, pp. 566-568
Citations number
20
Categorie Soggetti
Ornithology
Journal title
The Condor → ACNP
ISSN journal
00105422
Volume
100
Issue
3
Year of publication
1998
Pages
566 - 568
Database
ISI
SICI code
0010-5422(1998)100:3<566:ROAPEB>2.0.ZU;2-O
Abstract
We added artificial Shiny Cowbird (Molothrus bonariensis) eggs to Gray Kingbird (Tyrannus dominicensis) nests in the Bahamas, where Shiny Co wbirds were first recorded in 1993. Gray Kingbirds ejected 85% of arti ficial eggs within 48 hr of addition. Based upon the short time of con tact between the two species, we suggest that egg ejection by Gray Kin gbirds in the Bahamas is retention of ejection behavior from ancestral populations.