Effects of edge type and nest height on predation of artificial nests within subtropical Australian eucalypt forests

2004 ◽  
Vol 203 (1-3) ◽  
pp. 361-372 ◽  
Author(s):  
Scott D. Piper ◽  
Carla P. Catterall
Keyword(s):  
Artificial Nests ◽  
Edge Type ◽  
Nest Height ◽  
Eucalypt Forests

Does adjacent land use affect predation of artificial shrub-nests near eucalypt forest edges?

2002 ◽  
Vol 29 (2) ◽  
pp. 127 ◽  
Author(s):  
S. Piper ◽  
C. P. Catterall ◽  
M. F. Olsen
Keyword(s):  
Nest Predation ◽  
Forest Edges ◽  
Study Region ◽  
Artificial Nests ◽  
Edge Type ◽  
Site Type ◽  
Eucalypt Forest ◽  
Forest Remnants ◽  
Low Levels ◽  
Eucalypt Forests

Edge-related increases in nest-predation levels were tested using artificial nests placed within eucalypt forest remnants at distances of 0, 60, and 235 m from edges adjacent to areas of urban, pasture, and Pinus plantation. There were eight replicate sites of each edge type, scattered widely across a 30 000-km2 study region. Open-cup nests containing one quail egg and two plasticine eggs were placed in shrubs and exposed for 6 days. When predation of the quail egg was used to calculate predation levels, predation varied significantly with edge type but not distance to the edge, due to relatively low levels within sites bordering Pinus plantations. When predation of any egg was used to calculate predation levels, predation was not significantly affected by edge type or distance to the edge. Predation levels within eight independent forest interior transects distributed across the study region, and located 500-800 m from the nearest edge, were similar to those within transects 0 m from edges. Birds were the most important class of predator within all combinations of site type and distance to edge, and accounted for 92% of identified predation overall. These results do not support the existence of edge-related increases in predation of shrub nests within subtropical eucalypt forests.

scholarly journals Breeding phenology of Common Redstart (Phoenicurus phoenicurus) and its reproduction biology with artificial nests in Northeastern Ukraine

2021 ◽  
Vol 29 (2) ◽  
pp. 122-138
Author(s):  
Olena Yarys ◽  
Angela Chaplygina ◽  
Roman Kratenko
Keyword(s):  
Weather Conditions ◽  
Egg Laying ◽  
Artificial Nests ◽  
Nest Boxes ◽  
Reproduction Biology ◽  
Phoenicurus Phoenicurus ◽  
The Common ◽  
Nest Height ◽  
Average Size ◽  
Artificial Nest Boxes

Abstract The paper describes investigations on the reproduction biology (nesting, clutching, hatching, fledglings` departure) of the Common Redstart (Phoenicurus phoenicurus) in artificial nest boxes (AN) in Northeastern Ukraine. There were three sites of research: Hetman NNP, NPP “Gomilshansky Forests”, and RLP “Feldman Ecopark”. The research was performed during the nesting period from the first week of April to the first week of July in 2015‒2020. Annually, 5‒8 bird counts were conducted at each site. The first complete egg clutches at Hetman NNP were observed from 08.05 to 17.05 (2015‒2020) and at NPP “Gomilshansky Forests” from 02.05 to28.05 (2017‒2020). Dates of the first egg laying, at various conditions, had inter-annual variability because of unstable weather conditions in May. The average parameters of nests in AN at Hetman NNP were the following: diameter of nests (D) ‒ 124.1±6.3 mm; diameter of trays (d) ‒ 61.5±1.7 mm; nest height (H) ‒ 63.5±9.4 mm; depth of trays (h) ‒ 48.6±2.7 mm; nest mass (m) ‒ 43.7±3.8 mm. The size of complete clutches in Northeastern Ukraine was calculated when eggs were incubated. According to the average indicators, during 2015‒2020, the average size of the clutch was 6.9±0.3 (5‒8) eggs at Hetman NNP, 6.2±0.4 (6‒8) eggs at NPP “Gomilshansky Forests” and 8.5±0.5 (8‒9) eggs at RLP “Feldman Ecopark”. Incubation period of Ph. phoenicurus lasted on average for 15‒20 days.

scholarly journals The effects of forest edge and nest height on nest predation in a U.K. deciduous forest fragment

2020 ◽  
Author(s):  
Noah Atkin ◽  
Cris Banks-Leite
Keyword(s):  
Edge Effect ◽  
Nest Predation ◽  
Deciduous Forest ◽  
Forest Edge ◽  
Forest Edges ◽  
Forest Fragment ◽  
Artificial Nests ◽  
Conservation Implications ◽  
Mixed Deciduous Forest ◽  
Nest Height

It has been previously hypothesised that nest predation is higher at forest edges. This has important conservation implications for the increasingly fragmented U.K. climax community. I aimed to test the generality of this edge effect in a mixed deciduous forest fragment which borders open grassland. Artificial nests containing a combination of quail and plasticine eggs were used, at ground and arboreal levels. I found an overall edge effect on nest predation rates, however this effect was not specifically seen in ground nests. Ground nests experienced significantly higher levels of predation than arboreal nests. I suggest this edge effect is due in part to the steep productivity gradient over the ecotone.

Breeding success and population growth of Southern Ground Hornbills Bucorvus leadbeateri in an area supplemented with nest-boxes

2019 ◽  
Vol 29 (4) ◽  
pp. 627-643 ◽  
Author(s):  
KATE F. CARSTENS ◽  
RESHMA KASSANJEE ◽  
ROB M. LITTLE ◽  
PETER G. RYAN ◽  
PHIL A. R. HOCKEY
Keyword(s):  
Population Growth ◽  
Breeding Success ◽  
Conservation Status ◽  
Bird Species ◽  
Home Range Size ◽  
Positive Relationships ◽  
Artificial Nests ◽  
Nest Boxes ◽  
Nest Height ◽  
Breeding Groups

SummaryThe provision of artificial nests can improve the conservation status of threatened bird species that are limited by nest-site availability. The shortage of natural cavity nesting sites is one factor limiting the population growth of the Southern Ground Hornbill Bucorvus leadbeateri. In an 1,800 km2 study area in north-eastern South Africa, 31 wooden nest-boxes were installed during 2002–2015. We investigated the relationships between nests, as well as environmental and social factors, with breeding. Generalised linear mixed models were fitted to the observational data and identified positive relationships between breeding attempts and each of home range size and the previous year’s rainfall; as well as positive relationships between breeding success (amongst the groups that attempt breeding) and each of earlier breeding, nest height and thickness of the nest cavity wall. The provision of nest-boxes increased the number of breeding groups and although breeding success also increased initially, it later declined as the density of breeding groups increased above 20 groups. Although nest-boxes alone did not increase overall breeding success, they are an effective conservation tool to enhance the population of Southern Ground Hornbills if spaced optimally, to enhance reproductive output in areas where suitable nest-sites are scarce or lacking.

Mechanisms of rainforest persistence and recruitment in frequently burnt wet tropical eucalypt forests

2011 ◽  
Vol 37 (2) ◽  
pp. 268-275 ◽  
Author(s):  
PAUL R. WILLIAMS ◽  
MARK PARSONS ◽  
RIGEL JENSEN ◽  
CUONG TRAN
Keyword(s):  
Eucalypt Forests

scholarly journals Do Repugnant Scents Increase Survival of Ground Nests? A Test with Artificial and Natural Duck Nests

2007 ◽  
Vol 121 (2) ◽  
pp. 150
Author(s):  
Vanessa B. Harriman ◽  
Justin A. Pitt ◽  
Serge Larivière
Keyword(s):  
Human Hair ◽  
Nest Predation ◽  
Survival Rates ◽  
Olfactory Cues ◽  
Artificial Nests ◽  
Treatment Groups ◽  
Mammalian Predators ◽  
High Predation ◽  
Ground Nesting ◽  
Predation Rates

Ground-nesting birds typically experience high predation rates on their nests, often by mammalian predators. As such, researchers and wildlife managers have employed numerous techniques to mitigate nest predation. We investigated the use of scents as repellents to deter predators from both artificial and natural ground nests. Survival rates of artificial nests did not differ among six groups of substances (Wald ?2 df = 5 = 4.53, P < 0.48); however the chronology of predation among groups differed. A commercial Coyote urine based deterrent (DEER-D-TERTM), human hair, and Worcestershire sauce were depredated faster than the control (F4,5 = 40.3, P < 0.001). Nest survival of natural nests differed among those groups tested (Wald ?2 df = 2 = 11.8, P < 0.005); the eight mothball treatment decreased survival (Wald ?2 df = 1 = 11.5, P < 0.005), which indicated that novel smells may attract predators or result in duck nest abandonment when coupled with natural duck scent. Chronologies of predation events among treatment groups were not different for natural nests (F2,3 = 1.9, P = 0.22). These findings indicate an interaction between novel scents and predator olfactory cues.

Reduced Predation of Artificial Nests in Border-Edge Cuts on Woodlots

2001 ◽  
Vol 65 (2) ◽  
pp. 351 ◽  
Author(s):  
Kathleen K. Fleming ◽  
William M. Giuliano
Keyword(s):  
Artificial Nests
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