Breeding of the Giant Laughingthrush (Garrulax Maximus) At
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Breeding of the Giant Laughingthrush (Garrulax maximus) at Lianhuashan, Southern Gansu, China Author(s): Jie Wang, Chen-Xi Jia, Song-Hua Tang, Yun Fang, and Yue-Hua Sun Source: The Wilson Journal of Ornithology, 122(2):388-391. Published By: The Wilson Ornithological Society DOI: http://dx.doi.org/10.1676/09-057.1 URL: http://www.bioone.org/doi/full/10.1676/09-057.1 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/ terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. 388 THE WILSON JOURNAL OF ORNITHOLOGY N Vol. 122, No. 2, June 2010 The Wilson Journal of Ornithology 122(2):388–391, 2010 Breeding of the Giant Laughingthrush (Garrulax maximus) at Lianhuashan, Southern Gansu, China Jie Wang,1,2 Chen-Xi Jia,1 Song-Hua Tang,1 Yun Fang,1 and Yue-Hua Sun1,3 ABSTRACT.—We describe the nest sites, nests, description based on a single nest in a bamboo eggs, and incubation and provisioning behavior of the clump, which contained two eggs (Ludlow and endemic Giant Laughingthrush (Garrulax maximus)in Kinnear 1944). We describe the nests, eggs, a coniferous forest (2,850–2,950 m asl) at Lianhua- shan, southern Gansu, central China. We found seven nestlings, and nesting behavior of this species in shallow bowl-shaped nests in Picea-Abies trees, 4.0 6 an alpine conifer-dominated forest in southern 1.5 m (x 6 SD, n 5 7) above the ground during May Gansu, China. and June 2003, 2007, and 2008. Clutch size was 2.2 6 0.4 unspotted blue eggs (2–3, n 5 6) of which 1.4 6 METHODS 0.5 nestlings hatched (1–2, n 5 7), and 1.0 6 1.0 young fledged (0–2, n 5 7). Three nests failed, Study Area.—Our study area was in the possibly due to predation or abandonment during Lianhuashan Nature Reserve (34u 579 N, 103u prolonged rainfall. Both males and females incubated 469 E) in southern Gansu Province, China. The clutches; nest attentiveness during the day decreased forested area occurs on north, northeast, and from 92.6 6 0.9% before hatching to 59.4 6 1.5% northwest-facing slopes; only shrubs and grasses during days 3–7 of the nestling period. Both parents grow on south-facing slopes. Coniferous forest is fed the nestlings (1.0 6 1.0 times/hr) and consumed the feces (0.3 6 0.5 times/hr) during the 7–15 days after the most prevalent cover type and is dominated by hatching Received 28 March 2009. Accepted 26 Dragon spruce (Picea asperata) and Farges fir October 2009. (Abies fargesii). The other cover types are: (1) coniferous-deciduous forest, including spruce, fir, Himalayan birch (Betula utilis), and willow (Salix The endemic Giant Laughingthrush (Garrulax spp.); and (2) shrublands including willow, sea maximus) is distributed from southern Gansu and buckthorn (Hippophae rhamnoides), and barberry southeastern Qinghai to southern and southeastern (Berberis spp.). The study area has been described Tibet and northern Yunnan in southern and central by Sun et al. (2003). The mean annual tempera- China (Zheng 2005, Thompson 2007). Habitats ture is 5.1–6.0u C, with a maximum of 34.0u C occupied include open broadleaf and mixed and minimum of 227.1u C. The climate is broadleaf-coniferous forests, bamboo (Phyllosta- semiarid, and the annual precipitation is about chys spp.) scrub in broadleaf evergreen forest, oak 65 cm. (Quercus spp.) forest with scattered conifers, and Field Procedures.—We located seven nests (6 relatively open broadleaf evergreen forest with during incubation and 1 during the nestling stage) shrub understory at 2,135–4,115 m elevation by following nesting-related activities of adults or (Thompson 2007). by systematically checking individual trees in the The Giant Laughingthrush is the largest laugh- conifer-dominated forest between 2,850 and ingthrush (Cheng et al. 1987, Rasmussen and 3,100 m elevation during three breeding seasons Anderton 2005) and was previously treated as a (Apr–Jul in 2003, 2007, and 2008). We inspected subspecies of Spotted Laughingthrush (G. ocella- nests every 3–5 days to identify hatching and tus) (Ali and Ripley 1996). Little is known about fledging dates and, if possible, cause of nest its natural history and breeding except one failure. Incubation or brood care was documented using data loggers (Tinytag Plus 2 Gemini Data 1 Key Laboratory of Animal Ecology and Conservation Loggers, West Sussex, UK) at two nests, one of Biology, Institute of Zoology, Chinese Academy of which was monitored for 194 hrs during 11 days. Sciences, Beijing 100101, China. 2 Graduate School of Chinese Academy of Sciences, The probe was placed among the eggs to take a Beijing 100049, China. temperature reading every 15 sec. Length of on- 3 Corresponding author; e-mail: [email protected] and off-nest bouts, and behaviors of provisioning SHORT COMMUNICATIONS 389 TABLE 1. Giant Laughingthrush nests observed in the Lianhuashan Nature Reserve, southern Gansu, central China during May and June 2003, 2007, and 2008. DBH 5 diameter at breast height. Nest tree Nest Clutch size DBH Height above Distance to Nest # Date found Stage Species (cm) ground (m) the trunk (m) Eggs Nestlings Fledglings Nest fate 1 25 May 2003 Incubation Spruce 12 7.0 0.40 3 2 2 Successful 2 27 May 2003 Incubation Spruce 10 3.0 0.04 2 2 2 Successful 3 9 June 2003 Nestling Spruce 14 4.5 0.10 2 2 Successful 4 24 May 2007 Incubation Fir 32 3.8 2.00 2 1 1 Successful 5 9 June 2007 Incubation Spruce 13 4.0 0.05 2 1 0 Abandoned 6 26 May 2008 Incubation Fir 45 2.4 2.10 2 1 0 Depredated 7 3 June 2008 Incubation Spruce 26 3.5 2.20 2 1 0 Depredated young and removing feces were recorded at one diameter at breast height (DBH) of the nest tree. nest by observation (33.7 hrs during days 6–10, All data are expressed as x 6 SD. 12–13, and 15 of the nestling period) and at another nest by video recorder (1.9 hrs on the 15th RESULTS day of the nestling period). All observers and Nests were placed in Dragon spruce or Farges equipment were camouflaged using branches and fir with three in branches of large conifers (DBH leaves. 5 34 6 10 cm) at a height of 2.4–3.8 m above Nest characteristics were measured after termi- ground and 2.0–2.2 m from the trunk. Four nests nation of nesting and included height of the nest, were in small spruce (DBH 5 12 6 2 cm) nearly distance of the nest to trunk, and height and touching the trunk at a height of 3.0–7.0 m FIG. 1. Nest with two eggs of the Giant Laughingthrush in a Dragon spruce (Picea asperata) at Lianhuashan, southern Gansu, central China. Photograph by Chenxi Jia. 390 THE WILSON JOURNAL OF ORNITHOLOGY N Vol. 122, No. 2, June 2010 FIG. 2. Length of on- and off-nest bouts and nest attentiveness of the Giant Laughingthrush at one nest (found in 2007) during the incubation and nestling periods. Day 0 5 hatching day. The numbers on the asterisks are the time (hrs) monitored by data loggers whereas the numbers on/under the bars are the sample sizes of on/off-nest bouts. (Table 1). Nests were shallow and bowl-shaped incubation stage. The other nest was predated at (Fig. 1) with an inside diameter of 11.6 6 0.7 cm 2344 hrs (Beijing Time, revealed by data logger) (10.8–12.2 cm, n 5 4), outside diameter of 19.3 6 during the nestling stage with the nest overturned 0.9 cm (18.5–20.0 cm), inside depth of 5.1 6 and feathers of the adult scattered on the ground. 1.3 cm (4.0–6.5 cm), and outside height of 9.4 6 Mean length of on-nest bouts decreased from 1.1 cm (8.0–10.5 cm). Two nests were 78 and 80 g 59.4 6 39.1 min (1.5–136.0 min) before hatching in wet weight, respectively. The inside bowl of the to 27.6 6 18.0 min (3.0–72.5 min) during the nest was lined with thin strands of bamboo, nestling period, whereas mean off-nest bouts madder (Rubia spp.), and spiraea (Spiraea spp.) increased from 4.6 6 2.8 min (0.5–10.5 min) to stems, whereas the outer bowl and foundation 15.6 6 10.1 min (2.5–45.0 min) (Fig. 2). Nest were mainly of twigs, 25 cm (10–38 cm) in attentiveness during the day decreased from 92.6 length, mostly of honeysuckle (Lonicera spp.) 6 0.9% before hatching to 59.4 6 1.5% during with a few from spruce, fir, and birch.