A common resident of open habitats including farmland and human habitation, it has adapted to living in cities. Surprisingly, no detailed information exists on the diet of the Jungle Owlet, although it is a widely distributed species. We measured the dietary overlap (DO) among species using Pianka's formula: We calculated the geometric mean weight of prey (GMWP; Compact Handbook of the Birds of India and Pakistan, Taxonomic studies of Indian Muridae and Hystericidae (Mammalia Rodentia). Search for other works by this author on: Zoological Survey of India, 168-169, JDA Scheme No. 1994, Ganey and Block 2005, Gutiérrez et al. 2004, Scott et al. endobj 2009, Bolboaca et al. Marti (1974) studied the diet of sympatric Great Horned (Bubo virginianus), Long-eared (Asio otus), Burrowing (Athene cunicularia) and Barn Owls (Tyto alba) in central Colorado and found that each species has a unique hunting ecology that enabled them to capture prey of different types and sizes. The dietary overlap based on mammalian prey was high between the Forest and Spotted Owlets (87%), lower between the Spotted and Jungle Owlets (75%), and lowest between Forest and Jungle Owlets (48%). Information about spotted owls tells us that these species are nocturnal and they mostly scoop the prey and then gulp it down. Subject: Diets of Sympatric Forest Owlets, Spotted Owlets, and Jungle Owlets in East Kalibhit Forests, Madhya Pradesh, India, (Optional message may have a maximum of 1000 characters. The diet of the three species differed significantly. The owl's signal call—used by adult males and females to mark and defend territory, and by males delivering food to females—is a series of four hooted notes, with the middle two closest together. 0000082963 00000 n Journal of Raptor Research 1 September 2018; 52 (3): 338–348. <>stream 76 0 obj 2009). endobj In a general sense, Jungle Owlets feed mainly on insects and reptiles (Ali and Ripley 1987, König and Weick 2009). Indian Scops Owl is one of the largest of Scops Owl species is small … 0000001956 00000 n The FNB for class (FNBC) level was 0.40, 0.13, and 0.06 for Forest, Spotted, and Jungle Owlets, respectively, indicating that the Forest Owlet is a generalist species that feeds on a wide variety of prey, whereas the Spotted Owlet is relatively specialized in its diet, and the Jungle Owlet is even more specialized, hunting very specific prey species (Table 3). The Forest Owlet (Heteroglaux blewitti), Spotted Owlet (Athene brama) and Jungle Owlet (Glaucidium radiatum) are small owls coexisting in the East Kalibhit Forests in the Khandwa District of Madhya Pradesh State, India.We compared their diets to better understand their food habits, dietary overlap, and the mechanism of their coexistence. 0000028993 00000 n <> Nuestros resultados sugieren que las tres especies coexisten al consumir presas de diferentes tamaños. We are grateful to the Department of Science and Technology, New Delhi, the Raptor Research and Conservation Foundation, Mumbai, and the Mohamed Bin Zayed Species Conservation Fund for financial support for this study. unpubl. We identified small mammals to genus or species level using a mammal identification guide (Talmale and Pradhan 2009) or by comparing with specimens from Zoological Survey of India (ZSI), Pune. Percent prey frequencies in the diets of the Forest Owlet, Spotted Owlet, and Jungle Owlet in East Kalibhit Forests, Khandwa District, Madhya Pradesh, India. The diet of the Forest Owlet was dominated by mammals, followed by invertebrates and reptiles, whereas the diets of the Spotted and Jungle Owlets were dominated by invertebrates, followed by mammals. It is also known as the Spotted Little Owl… The Forest and Spotted Owlets had high dietary overlap among mammalian prey, as well as at the class level. 1). The mammalian biomass consumed by the three species differed significantly in the smallest prey class (<10 g; Kruskal Wallis H = 16.2, P < 0.05) and the 11–25-g class (H = 9.68, P < 0.05; Fig. Of 127 mammals consumed by Spotted Owlet, 70% were Mus and 22% Suncus. Recipient(s) will receive an email with a link to 'Diets of Sympatric Forest Owlets, Spotted Owlets, and Jungle Owlets in East Kalibhit Forests, Madhya Pradesh, India' and will not need an account to access the content. Records of the Zoological Survey of India, Occasional Paper No. prey (food-niche breadth [FNB]¼0.40) compared to the Spotted Owlet (FNB¼0.13) and the Jungle Owlet (FNB ¼ 0.06). Often uses street lamps as hunting bases, hawking insects attracted to the lights. By continuing to use our website, you are agreeing to, https://scholar.dominican.edu/scw/scw2015/Posters/53, https://www.fs.fed.us/rm/pubs/rmrs_rp057.pdf, Effects of Nest Box Installation on a Distribution Power Line: Increased Eurasian Kestrel Nesting, Reduced Electrocutions, and Reduced Electrical Faults, Isotopic Niche Partitioning in Avian Scavenger Communities of South America. In the southern portion of the owl’s range, the northern spotted owl mainly eats Ducky-footed woodrats (Neotoma fuscipes). data) and the Forest Owlet takes large numbers of prey on the ground (P. Mehta unpubl. 0000001685 00000 n <> To understand finer differences in prey selection, we divided prey species into five classes according to the prey weights: 0–10 g, 11–25 g, 26–50 g, 51–75 g, and 76–100 g. We computed the percent biomass in each class for each owl species. The length of these spotted owls is around 43 cm (17 inches). During low prey supply, sympatric owls can diversify their diet to widen their food-niche breadth, and in times of abundant food, may converge on the same food source and thus have high dietary overlap (Leveau et al. 2011, Patki et al. 75 0 obj We thank Hemant Ghate and Krushnamegh Kunte for helping in identification of prey remains of specific taxa. 0000002197 00000 n Although both the owls have similar body weights, the GMWP was higher for the Spotted Owlet than the Forest Owlet, because the Spotted Owlet hunted a higher proportion of large rodents than the Forest Owlet (Table 4, Fig. endobj Our findings on the mammalian prey of the Forest Owlet were similar to those reported by Jathar et al. The Forest Owlet (Heteroglaux blewitti), Spotted Owlet (Athene brama) and Jungle Owlet (Glaucidium radiatum) are small owls coexisting in the East Kalibhit Forests in the Khandwa District of Madhya Pradesh State, India. We located eleven roost/nest sites of the Forest Owlet, six of the Spotted Owlet, and five of the Jungle Owlet. endobj 0000001403 00000 n The barred owl is native to the eastern United States, and it’s cousin, the spotted owl is native to the western US. Forest owlets have a relatively large skull and beak. Jaksić (1982) tested the validity of this theory by predicting higher dietary overlap among synchronous (active at the same time) species than among asynchronous (active at different times) species and found that activity time did not adequately explain niche separation. The GMWP of the Spotted Owlet (16.4 ± 1.9 g) was significantly greater than that of the Forest Owlet (11.2 ± 2.6 g, t = −4.14, df = 448, P < 0.05) and the Jungle Owlet (4.5 ± 2.7 g, t = 7.39, df = 142, P < 0.05). The coexistence of the similar-sized Forest Owlet and the Spotted Owlet is apparently facilitated mainly by the differences in activity periods and in the size of mammalian prey consumed. To date, the Forest Owlet has been reported from twelve locations in India (Mehta et al. The diet of the Forest Owlet has been described from two published accounts, both from Toranmal Reserved Forests in northwestern Maharashtra State. 0000016635 00000 n The Spotted Owlet hunts mainly at night in the crop fields where these species are commonly found (Agrawal 2010). According to Schoener (1974), coexisting species segregate themselves primarily by selecting different foraging habitat, activity time, and prey species. The dietary overlap was highest between the Forest Owlet and Spotted Owlet (56%), lower between the Spotted and Jungle Owlet (28%), and lowest between the Forest and Jungle Owlet (22%). 2014) that compared the diets of sympatric Barn Owls and Spotted Owlets (Athene brama) reported that their coexistence is facilitated by the Spotted Owlet having a narrower food-niche breadth and taking smaller prey than the Barn Owl.


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