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Vultures provide essential ecological services, yet are amongst the world's most threatened species with populations having declined by more than 95% within ten years in some places. The biggest factor causing this decline is the use of poison, either intentionally or unintentionally. Other factors causing declines are collision with and electrocution by powerlines, illegal harvesting for traditional medicines, habitat loss and drowning in reservoirs.

The species accounts are very detailed, doubtlessly benefitting from Peter's intimate and long-term knowledge of Botswana's birds. The range maps give one an immediate indication of where the bird occurs and the breeding bars give one an idea of when to expect the bird and when it breeds. These will prove handy when identifying e.g. migratory birds. The excellent illustrations show the birds in their local race and where sexes and ages differ, these are also illustrated. Perhaps one shortcoming of the illustrations is, that diagnostic features e.g.

Summary of the 2015 Summer Wetland Bird Counts in Namibia.

Many long-distance migrating shorebird (i.e., sandpipers, plovers, flamingos, oystercatchers) populations are declining. Although regular shorebird monitoring programs exist worldwide, most estimates of shorebird population trends and sizes are poor or nonexistent. We built a state-space model to estimate shorebird population trends. Compared with more commonly used methods of trend estimation, state-space models are more mechanistic, allow for the separation of observation and state process, and can easily accommodate multivariate time series and nonlinear trends.

Summary of the 2014 Summer Wetland Bird counts in Namibia.

The following is a summary of waterbird count data for selected species in Namibia, covering the period 1977 to December 2008.

An aerial survey specifically aimed at mountain zebra (Equus zebra hartmannae) was carried out by the survey unit of the Ministry of Environment and Tourism from 19 to 24 June 2013. The survey covered the Naukluft Mountains in the Namib-Naukluft Park and a large area of the Khomas Hochland west of Windhoek, between the Swakop River in the north and the Naukluft Mountains in the south (Figure 1). The survey was carried out using a Bell Jet Ranger 206 helicopter (V5-HIR) with a crew of four using standard aerial survey methodology.

The eighth article in the series on trends in Namibian waterbird populations summarizes count data for six species for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

Wetland bird counts were once again conducted throughout Namibia during the months of January and February 2012. A total of 33 sites were covered resulting in 262 833 birds of 112 species. For the first time since 2007 counts were also conducted in the Caprivi, on the Okavango and the Kwando Rivers. The effects of the good rainy seasons over the past few years are still very evident with low numbers of especially flamingos and ducks recorded at the coast.

This article continues the series on trends in Namibian waterbird populations and summarizes count data for ducks and geese for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

This article continues the series on trends in Namibian waterbird populations and summarizes count data for ducks and geese for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

The sixth article in the series on trends in Namibian waterbird populations summarises count data for African Spoonbill, Hamerkop, Greater and Lesser Flamingo and Wattled Crane for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

Conducting aerial surveys is one of the core functions of the Ministry of Environment and Tourism. The surveys are essential management tools, allowing for informed decision making. Aerial surveys have been conducted in Etosha National Park since 1968. Apart from a series of elephant surveys, these surveys were strictly speaking not comparable as they were undertaken at irregular intervals with different sampling intensities and area cover. The first comprehensive multi-species sample count was conducted in 1995, and repeated in 1998, 2000, 2002, 2004, 2005 and 2010.

The winter wetland bird counts were conducted during July and August 2011 at 32 sites throughout Namibia. The abnormal rainy season experienced in most parts of the country had resulted in plenty of water still being in the field and this was evident in the counts. Lower numbers than usual were recorded at most sites and the Walvis Bay count was the lowest since regular counts were started. The low numbers are due to an almost complete absence of flamingos, lower than usual numbers of geese and ducks and the absence of certain waders e.g.

This article continues the series on trends in Namibian waterbird populations and summarises count data for herons and egrets for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

Namibia was blessed with extraordinary rains in most parts of the country early in 2011 and this is evident in the results of the summer wetland bird counts. Access to many of the count sites was difficult due to the wet conditions. In fact, the count at Lake Oponono had to be abandoned because of the muddy conditions. Rain interrupted many counts and even at Sandwich Harbour the counters had to endure about two hours of pouring rain before continuing with the count. Oddly enough, Tsutsab Vlei, near Tsintsabis in northern Namibia, was bone dry when the counts were done.

This article continues the series on trends in Namibian waterbird populations and summarises count data for herons and egrets for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

This is the last article in a series describing the results of regular wetland bird counts in Namibia. This paper looks at eight coastal sites, including two of Namibia's four Ramsar sites i.e. Sandwich Harbour and Walvis Bay. Unfortunately data for Namibia's other coastal Ramsar site, the Orange River Mouth, is incomplete and hence it has not been included in this analysis. (Larger scale replications of the graphs in this article are attached to the end of this edition).

The third article in the series on trends in Namibian waterbird populations summarises count data for cormorants and darter for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

The fifth article in the series on trends in Namibian waterbird populations summarises count data for storks and ibises for the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

During the month of July 2009 volunteers once again participated in the winter wetland bird counts all over Namibia. A total of 27 wetlands were counted resulting in just over 99,000 birds of 87 species. The number of sites being counted is up thanks to the Namibia Bird Club, which is now conducting regular counts at Avis Dam, the Gammams (Windhoek) Sewage Works and Monte Christo. The Walvis Bay Ramsar site tops the list with over 50,000 birds, followed by Sandwich Harbour and the Mile 4 Saltworks.

Data on wetland bird numbers has been collected in Namibia on an ad hoc basis since the early 1960's. Since 1991 regular counts have been conducted at several sites and thus a considerable amount of data has accumulated. This article and the ones to follow is a summary of the available data and an attempt to derive population trends for selected wetland bird populations. To date (July 2009), data from 1703 counts at 172 places has been entered into a database. A total of 177 different species of waterbird have been counted at these sites.

The following is a summary of waterbird count data for selected species in Namibia, covering the period 1977 to December 2008. For each species the Red Data Book (RDB) status, both global and Namibian, is given, the population trend as per Wetlands International, the number of times the species was counted, the number of times it has passed the 1% population criterion, the maximum count and the sites where it has passed the 1% population criterion.

This is the second article in a series describing the results of regular wetland bird counts in Namibia and groups together inland sites where water is present most of the time. The article gives details for two perennial river sites and nine dams for which ten or more counts are available up to the end of 2008.

The survey took two hours 54 minutes, which translates into a search rate of 1.6 km/min. The flight path was recorded on the GPS tracklog and is shown in Figure 2 (deviations from the transects are where rhino, elephant or large herds of animals were encountered). A total of 253 sightings were recorded during this time (Figure 3) which comprised 1539 animals of seventeen species (Table 1). Kaross game camp is 144 km² in size so the density of animals calculates to 10.7 animals/km². The distribution and herd size for selected species is shown in Figure 4 to Figure 11.

January 2010 announced its arrival with welcome and wide-spread rain throughout Namibia. The result of this was that we were expecting bumper counts at many of the inland wetlands, although the two coastal heavyweights would be expected to contribute the majority in terms of numbers, as usual. During this count cycle 26 sites were counted, an increase on previous counts, in no small part due to the efforts of the Namibia Bird Club that is now counting many wetlands around Windhoek.

This is the third article in a series describing the results of regular wetland bird counts in Namibia and groups together inland sites where water is seasonally present as well as three sewage treatment plants. The article gives details for ten sites for which ten or more counts are available up to the end of 2008.

In more than 100 countries, millions of waterbirds are counted each year. Wetlands International coordinates the International Waterbird Census (IWC) throughout the world and the data is used to e.g. designate Wetlands of International Importance and Important Bird Areas. Namibia has participated in these counts since 1990 and hence a considerable set of data has accumulated. Data is on hand for 1703 (as at July 2009) waterbird counts at 172 sites in Namibia. The earliest counts are from 1976 and a peak in terms of sites counted was reached in 1995 when 73 wetlands were counted…

The southern African Lesser Flamingo population was estimated to number 55,000 - 65,000 individuals in the mid-1990s, but these were either under estimates or the numbers have increased since, because at times Kamfers Dam, the Goldfields wetlands (in South Africa), Etosha Pan (Namibia) and Sua Pan (Botswana) each support more than that number. In order to try and get to grips with the size of the southern African population of Lesser Flamingos, a coordinated survey was planned for 20-21 July 2008.

The 30 June 2008 signaled the end of the 2007 ringing season and the following is a summary thereof. In total 9 637 birds of 270 species were ringed or re-trapped, controlled etc. this season. Out of this total 9 033 were newly ringed birds (i.e. SAFRING code 1). Data from 19 ringers was received and Dirk Heinrich once again is the "ringing king" of code 1 birds, followed by Tim Osborne and Mark Boorman but in the re-trap etc. category Tim pipped Dirk, followed by Ursula Franke. Dirk also held top spot in the number of different species ringed category.

The start of the new year once again meant that Namibia's bird watchers had to dust off their binoculars and venture out to do the annual summer wetland counts. The global economic crisis does not seem to have affected the birders because I'm pleased to report that twenty-seven sites were counted although the geographic coverage is still very much biased in favour of the coast. The two Ramsar sites, Sandwich Harbour and Walvis Bay, once again came up trumps in terms of bird numbers but the most species were encountered by Wilferd at Oponono.

Namibia experienced some extreme rainfall in the first three months of 2006 and this, perhaps, is reflected in the results of the January wetland counts. One counter, Wilfred, could not get to his sites because it was too wet! In terms of numbers Walvis Bay leads by far but the Mahango yet again confirms its status as the most species rich birding destination in our country.

Namibia's loyal wetland bird counters once again delivered the goods in July/August in the twice annual wetland bird counts. In total 141704 birds of 112 species were counted at 21 localities.