Avian Demography Unit
Department of Statistical Sciences
University of Cape Town
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ADU travels, expeditions and events

Dyer Island, 2 - 3 January 2003

Dieter Oschadleus

Dyer Island is a small island, offshore from Gansbaai in the Western Cape. Bruce Dyer, John Cooper and myself visited the island to trap Leach's Storm Petrels, if possible. Read more about Dyer Island, Geyser Island, and Leach's Storm Petrels.


Dyer
Photo H.D. Oschadleus
  View of the houses on Dyer Islnad. Tony Venter lives here to manage the island.

Dyer
Photo H.D. Oschadleus
  Welcoming committee of Kelp Gulls.

Dyer
Photo H.D. Oschadleus
  Cape Cormorants on the rocks. In the background is the mainland.

Dyer
Photo H.D. Oschadleus
  "African Penguins having driving lessons", was John's comment.

Dyer
Photo H.D. Oschadleus
  Turnstone foraging. A migrant, found mainly on rocky shores.

Dyer
Photo H.D. Oschadleus
  Common Tern flock with a few Sandwich and Swift Terns. There were several thousand roosting on the rocks.

Dyer
Photo H.D. Oschadleus
  I put up mistnets in the early afternoon to catch some resident birds. Several Rock Pigeons, including this immature bird, were ringed as was a House Sparrow. At least two cormorants flew into the nets but got out before we could reach the nets (and before damaging the nets!). John caught some of the Rock Pigeons by hand after dark using a torch.

Dyer
Photo H.D. Oschadleus
  At midnight we went out for our regular check of the nets and heard the Leach's Storm Petrels calling. One was caught in the nets, much to our delight. We did not catch any more, although one flew into me (I was too surprised to grab it and it was rather dark so I didn't see it coming). Bruce counted about 3 birds calling.

Dyer
Photo H.D. Oschadleus
  Closeup of the Leach's Storm Petrel. The lighter colouring on the wing is due to the candle light held close to the bird so that I could focus correctly.

Dyer
Photo H.D. Oschadleus
  The next morning I walked around the island with Tony Venter and his assistant, Natasha, to survey the African Black Oystercatchers. Two is the usual clutch size.

Dyer
Photo H.D. Oschadleus
  Next to Dyer Island is the smaller seal covered Geyser Island.


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Document posted 5-Jan-2003