Articles by Author: Mark Brown

Search results for Mark Brown

We found 210 results for you
  1. A model to predict productivity of different chipping operations

    A model to predict productivity of different chipping operations

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    The chipping operation is an important component of harvesting systems producing biomass and pulp chips. This paper aimed to develop a valid model to predict the productivity of chipping as part of these operations. Over a number of years more...
  2. Reintroduction of captive-bred African Grass-Owls <em>Tyto capensis</em> into natural habitat

    Reintroduction of captive-bred African Grass-Owls <em>Tyto capensis</em> into natural habitat

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    This study represents the first attempt to determine post-release survival of a captive-bred owl in Africa. We released six captive-bred African Grass-Owls Tyto capensis into suitable habitat and, using radio telemetry, determined their daytime roost sites. One bird left the...
  3. Is commercial <em>Protea</em> farming causing a change in the seasonal range of Gurney's Sugarbird <em>Promerops gurneyi</em> in the KwaZulu-Natal Midlands, South Africa?

    Is commercial <em>Protea</em> farming causing a change in the seasonal range of Gurney's Sugarbird <em>Promerops gurneyi</em> in the KwaZulu-Natal Midlands, South Africa?

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Species worldwide are threatened due to various factors including habitat transformation and degradation. The Gurney's Sugarbird Promerops gurneyi is a bird species endemic to southern Africa. It is a nectarivorous species that is highly dependent on Protea woodland areas in...
  4. Development and functional significance of dorsal air bags in nestlings of Monteiro's Hornbill <em>Tockus monteiri</em>

    Development and functional significance of dorsal air bags in nestlings of Monteiro's Hornbill <em>Tockus monteiri</em>

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    This study describes the morphology and investigates the possible function of the air bags found on the nestlings of Monteiro's Hornbill Tockus monteiri. These air bags increased in size with age and mass of the nestling until 14 d of...
  5. Observations of Cape Parrot, <em>Poicephalus robustus</em>, nesting in the wild

    Observations of Cape Parrot, <em>Poicephalus robustus</em>, nesting in the wild

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Most Cape Parrot, Poicephalus robustus, nests have been recorded in snags (standing dead trees) making monitoring of nest contents and nest activities difficult and dangerous. Here the breeding activity of a Cape Parrot pair in the cavity of a live...
  6. Annual and seasonal trends in avifaunal species richness in a coastal lowlands forest reserve in South Africa

    Annual and seasonal trends in avifaunal species richness in a coastal lowlands forest reserve in South Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Annual and seasonal trends in species richness of the avifaunal community of a coastal forest at Umdoni Park, Pennington, KwaZulu-Natal, South Africa were assessed. Presence/absence data were collected between September 1996 and February 2003, using transect lines and mist-netting. A...
  7. Erratum

    Erratum

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology