Skip to main content
U.S. flag

An official website of the United States government

Nesting ecology of White-faced Ibis (Plegadis chihi) in Great Salt Lake, Utah

July 22, 2020

We studied the nesting ecology of White-faced Ibis (Plegadis chihi) at 3 sites within the Bear River Migratory Bird Refuge, Great Salt Lake, Utah, USA. Ibises built nests in small mounds (mean height = 14.4 ± 4.3 cm) above shallow water (mean depth = 12.0 ± 6.6 cm) located within patchy vegetation (mean percent vegetative cover = 17.2 ± 17.8% vegetative cover) with mean vegetation height of 31.7 ± 9.8 cm. White-faced Ibis typically laid a clutch of 3 or 4 eggs (mean clutch size = 3.08 ± 0.76) and initiated nests over a 50 d period between 24 April 2012 and 12 June 2012. Mean nest success was 38% (95% CI: 31–45%) and hatching success of eggs from successful nests was 76 ± 26%. Although most of the breeding parameters estimated for White-faced Ibis nesting in Utah were comparable to other populations in Oregon and Idaho (USA), nest success may now be lower than has been historically documented.

Publication Year 2020
Title Nesting ecology of White-faced Ibis (Plegadis chihi) in Great Salt Lake, Utah
DOI 10.1676/1559-4491-132.1.134
Authors Mark P. Herzog, Josh T. Ackerman, C. Alex Hartman, Howard Browers
Publication Type Article
Publication Subtype Journal Article
Series Title The Wilson Journal of Ornithology
Index ID 70217311
Record Source USGS Publications Warehouse
USGS Organization Western Ecological Research Center