More information:

Ludynia, K., Jones, R., Kemper, J., Garthe, S. and Underhill, L.G. 2010. Foraging behaviour of bank cormorants in Namibia: Implications for conservation.  Endangered Species Research, 12(1): doi: 10.3354/esr00288


Description:

Foraging behaviour of bank cormorants in Namibia: Implications for conservation.

Summary / Notes:

We studied the foraging and diving behaviour of male bank cormorants Phalacrocorax neglectus at Mercury Island, Namibia, during the 2007-2008 breeding season. The island hosts the world's largest breeding colony of this endangered species. Population numbers are currently stable at Mercury Island, whereas numbers at other colonies in Namibia are decreasing, including those at formerly important colonies. This trend is presumably due to reduced food availability. At Mercury Island, bank cormorants foraged inshore (ca. 2 km off the coast) in close vicinity to their breeding site (ca. 3 km off the colony) and dived to an average depth of 30 m. Diet at Mercury Island was dominated by demersally occurring pelagic goby Sufflogobius bibarbatus. Our findings suggest that bank cormorants are benthic feeders along their entire range and that their foraging behaviour in Namibia does not differ from that suspected in South Africa. Further studies, extending to other breeding sites, are needed to explain the different population trends and how these may be influenced by food availability. The identification of important foraging sites will play a crucial role in the management of Namibia's first Marine Protected Area and will contribute towards the protection of this species. Keywords: Bank cormorant, Phalacrocorax neglectus, Namibia, Foraging, Benthic diving, Endangered species.

Year: 2010

Type: Journal Article

Download: Foraging behaviour of bank cormorants in Namibia.pdf (774 kb)

Preview: Preview this file


Top 50 related results:

You may also be interested in the following items which are on a similar or related topic, listed in order of similarity.

Results per page:

Results: 1 to 50 of 50

To FILTER: Use the pale green row to filter the results on this page. Type in text or select from the year list.

Rows matching filter(s): All
What is this row? 
Data titleYearOriginFile typeDownloadkml/kmz
Ludynia, K., Roux, J-P., Kemper, J. and Underhill, L.G. 2010. Surviving off junk: low-energy prey dominates the diet of African Penguins Spheniscus demersus at Mercury Island, Namibia, between 1996 and 2009. African Journal of Marine Science, 32(3): 563-572
  » More info & related results
2010 Journal Article
Kohler, S., Mablouké, C., Hill, J.M., Le Corre, , M., Connan, M., Ludynia, K., Kemper, J., Huisanem, J., Underhill, L.G., Cherel, Y., Mcquaid, C.D. and Jaquemet, S. 2010. Are African Black Oystercatchers good indicators of large-scale trends in intertidal community? A stable isotope study. Oral presentation
  » More info & related results
2010 Presentation
Kolberg, H. 2011. Wetland Bird Counts in Namibia 4: Coastal Wetlands. Lanioturdus, 44(1): 9-13 and 26-31
  » More info & related results
2011 Journal Article609 kb pdf
Preview
Kolberg, H. 2011. Trends in Namibian Waterbird Populations 3: Cormorants and Darter. Lanioturdus, 44(1): 16-18
  » More info & related results
2011 Journal Article286 kb pdf
Preview
Kolberg, H. 2010. Wetland Bird Counts in Namibia 1: Introduction and Overview. Lanioturdus, 43(2): 13-14
  » More info & related results
2010 Journal Article143 kb pdf
Preview
Kolberg, H. 2010. Trends in Namibian Waterbird Populations 2: Grebes and Pelicans. Lanioturdus, 43(3): 8-11 and 34-41
  » More info & related results
2010 Journal Article437 kb pdf
Preview
Erard, J. 2004. Observation of two Open-Billed Stork Anastomus lamelligerus along the Namibian coast. Lanioturdus, 37(1): 22-23
  » More info & related results
2004 Journal Article118 kb pdf
Preview
Simmons, R.E. 2002. Sandwich Harbour birds - April 2002. Lanioturdus, 35(4): 10-13
  » More info & related results
2002 Journal Article246 kb pdf
Preview
Kaestner, P.G. 1998. Walvis Bay - Birds for everyone. Lanioturdus, 31(2): 2-12
  » More info & related results
1998 Journal Article581 kb pdf
Preview
Nebe, B. 1999. Unusual birds on the coast. Lanioturdus, 32(2,3 & 4): 20-23
  » More info & related results
1999 Journal Article229 kb pdf
Preview
Simmons, R. 1997. Namibian wetland bird counts for 1997. Lanioturdus, 30(3): 27-31
  » More info & related results
1997 Journal Article379 kb pdf
Preview
Simmons, R. 1993. Namibia's third national wetland bird survey, July 1992. Lanioturdus, 27: 9-12
  » More info & related results
1993 Journal Article323 kb pdf
Preview
Kolberg, H. 1982. Kurzmitteilung. Lanioturdus, 18(7): 8
  » More info & related results
1982 Journal Article220 kb pdf
Preview
Kolberg, H. and Kolberg, H. 1978. Beobachtungen an den Swakopmunder Klaerteichen. Lanioturdus, 14(1-2): 1
  » More info & related results
1978 Journal Article85 kb pdf
Preview
Tree, A.G. and Boorman, M. 2011. Wader data collected on the Namibian coast in late January/March 1998 and February/March 1999. Lanioturdus, 44(5): 11-26
  » More info & related results
2011 Journal Article1.28 mb pdf
Preview
Thomson, N. 2011. Lesser Flamingos at the Namibian Coast. Lanioturdus, 44(4): 25
  » More info & related results
2011 Journal Article175 kb pdf
Preview
Demasius, E. 2011. Breaking News: Greater Sand Plover in Swakopmund. Lanioturdus, 44(1): 13-14
  » More info & related results
2011 Journal Article314 kb pdf
Preview
Kolberg, H. 2009. Report on the Summer Wetland Bird Counts, January/February 2009. Lanioturdus, 42(3): 11
  » More info & related results
2009 Journal Article247 kb pdf
Preview
Paterson, J., Boorman, M., Glendinning, J., Komen, L., Komen, T. and Paterson, B. 2009. Vagrants, range extensions and interesting bird records for Skeleton Coast Park Namibia and southern Angola. Lanioturdus, 42(2): 4-10
  » More info & related results
2009 Journal Article359 kb pdf
Preview
Simmons, R. 2001. Successful conservation measures for Damara Terns in Namibia. Lanioturdus, 34(1): 14-16
  » More info & related results
2001 Journal Article227 kb pdf
Preview
Simmons, R.E. 2001. Namibia wetland bird counts: January, April and July 2000. Lanioturdus, 34(2): 19-23
  » More info & related results
2001 Journal Article441 kb pdf
Preview
Boorman, M. 2001. Unusual coastal sightings. Lanioturdus, 34(2): 29-30
  » More info & related results
2001 Journal Article179 kb pdf
Preview
Douthwaite, R. 2003. Red-footed Booby at Walvis Bay. Lanioturdus, 36(2): 28
  » More info & related results
2003 Journal Article127 kb pdf
Preview
Childress, B. 2004. Remarkable Lesser Flamingo recovery. Lanioturdus, 37(1): 3-4
  » More info & related results
2004 Journal Article198 kb pdf
Preview
Tree, A.J. and Boorman, M. 2007. Lüderitz colour-ringed Hartlaub's Gull at Walvis Bay. Lanioturdus, 40(1): 24
  » More info & related results
2007 Journal Article226 kb pdf
Preview
Simmons, R.E. 2002. Sandwich Harbour bird monitoring January 2002. Lanioturdus, 35(1): 2-4
  » More info & related results
2002 Journal Article235 kb pdf
Preview
Osborne, T., Stringer, J. and Wearne, K. 1998. Walvis Bay wader weekend. Lanioturdus, 31(4): 25-27
  » More info & related results
1998 Journal Article239 kb pdf
Preview
Kaestner, P.G. 1998. Identifying immature Plovers on the coast: Do Kentish Plovers occur in Namibia?. Lanioturdus, 31(1): 22-23
  » More info & related results
1998 Journal Article164 kb pdf
Preview
Simmons, R. 1998. World record Terns at Sandwich?. Lanioturdus, 31(1): 23-26
  » More info & related results
1998 Journal Article346 kb pdf
Preview
Sea Fisheries branch ringing programme. Lanioturdus, 16(3-4): 2
  » More info & related results
1980 Journal Article159 kb pdf
Preview
de Villiers, J.S. 1980. Easter at Sandwich Harbour. Lanioturdus, 16(3-4): 2-4
  » More info & related results
1980 Journal Article307 kb pdf
Preview
Smith, B.H. 1981. Ichaboe Island. Mitteilungen Ornithologische Arbeitsgruppe SWA Wissenschaftliche Gesellschaft, 17(5): 1-2
  » More info & related results
1981Bibliography compiled by Bird Database ProjectJournal Article134 kb pdf
Preview
Kohler, S.A., Connan, M., Hill, J.M., Mablouké, C., Bonnevie, B., Ludynia, K., Kemper, J., Huisanem, J., Underhill, L.G., Cherel, Y., McQuaid, C.D. and Jaquemet, S. 2011. Geographic variation in the trophic ecology of an avian rocky shore predator, the African black oystercatcher, along the southern African coastline.  Marine Ecology Progress Series, 435: 235-249
  » More info & related results
2011 Journal Article882 kb pdf
Preview
Kemper, J., Roux, J-P. and Underhill, L.G. 2009. Effect of Age and Breeding Status on Molt Phenology of Adult African Penguins (Spheniscus Demersus) in Namibia. The Auk, 125(4): 809-819
  » More info & related results
2009 Journal Article748 kb pdf
Preview
Beobachtungshuettenin Walvis Bay und Swakopmund. Mitteilung Ornithologische Arbeitsgruppe SWA Wissenschaftliche Gesellschaft, 7(5-7): 10-11
  » More info & related results
1971 Journal Article268 kb pdf
Preview
Birds and Bats Unlimited. 2017. Appendix H - Avian Impact Assessment: Walvisbay - Waterfront development: Potential effects on birds of the RAMSAR site
  » More info & related results
2017 Report1.9 mb pdf
Preview
Namibia Coastal/Marine Bird News, 6. Newsletter of the Namibia Coastal/Marine Bird Working Group, January 2009
  » More info & related results
2009 Report911 kb pdf
Preview
Demasius, E. 2012. Damara Terns: Development and care of the young. Lanioturdus, 45(1): 3-6
  » More info & related results
2012 Journal Article1.08 mb pdf
Preview
Kolberg, H. 2010. Summary of the 2009 Winter Wetland Bird Counts in Namibia. Lanioturdus, 43(2): 15-16
  » More info & related results
2010 Journal Article154 kb pdf
Preview
Dantu, S. 2010. Hooked Kelp Gull. Lanioturdus, 43(3): 16
  » More info & related results
2010 Journal Article176 kb pdf
Preview
Simmons, R.E. 2001. Sandwich Harbour report - April 2001. Lanioturdus, 34(3): 2-3
  » More info & related results
2001 Journal Article151 kb pdf
Preview
Simmons, R.E. 2001. Sandwich Harbour report - July 2001. Lanioturdus, 34(3): 3-6
  » More info & related results
2001 Journal Article219 kb pdf
Preview
Dantu, S. and Boorman, M. 2003. A homing pelican? Lanioturdus, 36(2): 2-3
  » More info & related results
2003 Journal Article152 kb pdf
Preview
Boorman, M. 2003. Second coastal record of Buff-spotted Flufftail Sarothrura elegans for Namibia. Lanioturdus, 36(3): 8-9
  » More info & related results
2003 Journal Article169 kb pdf
Preview
Tree, A.J. 2005. Black Skimmer at Walvis Bay. Lanioturdus, 38(1): 17-20
  » More info & related results
2005 Journal Article320 kb pdf
Preview
Kemper, J. and Roux, J-P. 2005. Of squeezers and skippers: Factors determining the age at moult of immature African Penguins Spheniscus demersus in Namibia. Ibis, 147(2): 346-352
  » More info & related results
2005 Journal Article298 kb pdf
Preview
van Rooyen, C. 2009. Environmental Impact Assessment (EIA) for the proposed desalination plant at Mile 6, Swakopmund - Bird Impact Assessment Study
  » More info & related results
2009 Presentation13.54 mb ppt
Preview
Kolberg, H. 2015. Namibia's Important Bird and Biodiversity Areas 2: NA014 Sandwich Harbour. Lanioturdus, 48(3): 10-18
  » More info & related results
2015 Journal Article5.4 mb pdf
Preview
Tree, A.J. 1998. Terns on the Namibian coast in early 1998. Safring News, 27(1): 7-11
  » More info & related results
1998 Journal Article471 kb pdf
Preview
Simmons, R., Kolberg, H., Braby, R. and Erni, B. 2015. Declines in migrant shorebird populations from a winter-quarter perspective: State-Space Models for Shorebird Trends. Conservation Biology, 29(3): 877-887
  » More info & related results
2015 Journal Article

» Links to useful free software for working with shapefiles, kml and kmz files, pdf files and more.