Articles by Author: Robert Swann

Search results for Robert Swann

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  1. The taxonomic position and breeding range of Golden Nightjar <em>Caprimulgus eximius</em> (Caprimulgidae)

    The taxonomic position and breeding range of Golden Nightjar <em>Caprimulgus eximius</em> (Caprimulgidae)

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Golden Nightjar Caprimulgus eximius is an apparently sedentary sub-Saharan species with a breeding range extending from Senegal and Mauritania to Sudan. Although genetic studies of nightjars and related Caprimulgiformes have been published previously, none has included Golden Nightjar. In this...
  2. A NOTE ON GENERALISED SHIFTS

    A NOTE ON GENERALISED SHIFTS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A necessary and sufficient condition for a generalised shift on two symbols to be one-to-one is given. The criterion also holds when applied directly to shifts on more than two symbols. Two examples to illustrate the results are included.
  3. A POINTWISE CONVERGENCE THEOREM FOR SOME ERGODIC MEANS

    A POINTWISE CONVERGENCE THEOREM FOR SOME ERGODIC MEANS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A pointwise convergence theorem is proved for automorphisms with quasi-discrete spectrum.
  4. PRE-INDEPENDENCE BEHAVIOUR, MORPHOMETRICS AND TRAPPING OF FLEDGLING REDBREASTED SPARROWHAWKS

    PRE-INDEPENDENCE BEHAVIOUR, MORPHOMETRICS AND TRAPPING OF FLEDGLING REDBREASTED SPARROWHAWKS

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Simmons, Robert. 1984. Pre-independence behaviour, morphometrics and trapping of Redbreasted Sparrowhawks. Ostrich 55:158-162.
  5. NOTICE

    NOTICE

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  6. SHORT NOTES

    SHORT NOTES

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  7. REVIEWS

    REVIEWS

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  8. SHORT NOTES

    SHORT NOTES

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  9. COMPARISONS AND FUNCTIONS OF SKY-DANCING DISPLAYS OF <em>CIRCUS</em> HARRIERS: UNTANGLING THE MARSH HARRIER COMPLEX

    COMPARISONS AND FUNCTIONS OF SKY-DANCING DISPLAYS OF <em>CIRCUS</em> HARRIERS: UNTANGLING THE MARSH HARRIER COMPLEX

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Simmons, R. 1991. Comarisons and functions of sky-dancing displays of Circus harriers: untangling the marsh harrier complex. Ostrich 62:45-51.
  10. COMMENTARY

    COMMENTARY

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