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Protection for a fee: Band-tailed Gulls and Red-legged Cormorants

10,000 Birds

Frigatebirds don’t occur in the cold waters of the coast of Peru and Chile, but Band-tailed Gulls (Larus belcheri) have developed similar strategy. Instead of hovering, some gulls have set up territories within breeding colonies of Humboldt seabirds. It is, to some extent, a win-win situation.

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Pied Oystercatchers breeding in Broome

10,000 Birds

This year we have continued to monitor the breeding of several pairs of Pied Oystercatchers along the coast in Broome from Gantheaume Point to Willie Creek on the south side. We have never had a pair succeed in raising all of their chicks and even to succeed in raising one takes a lot of effort because they are so dependent on their parents.

Breeding 158
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Outstanding Pied Oystercatcher parenting!

10,000 Birds

Of the sixteen pairs of Pied Oystercatchers between Gantheaume Point and Willie Creek on the south side, which is a length of breeding territories covering 23 kilometres-just over 14 miles-only one chick fledges most years. Each pair has a strategy and sometimes it is successful and sometimes it is not.

Eggs 165
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Pied Oystercatcher nesting

10,000 Birds

Since discovering our first Pied Oystercatcher nest on Cable Beach in July 2000 we have observed the breeding of these local shorebirds along the coast between Gantheaume Point in the south and Willie Creek in the north, which is a distance of 23 kilometres. The last time they successfully raised a chick was in 2012.

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Birding the Kruger Park (2): Bateleur area

10,000 Birds

Wikipedia also has an interesting paragraph hinting at observation bias in ornithologists: “At the continental scale, saddle-billed storks preferred protected areas that have a higher extent of open water compared to areas without the storks. The benefit for the wasps is that they get to keep a beautiful pet.

Ostriches 147
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Where have they gone?

10,000 Birds

Counting the Birds I was in my teens when I undertook my first bird-survey: it was field work for the British Trust for Ornithology’s The Atlas of Breeding Birds in Britain and Ireland. The breeding and wintering birds of Britain and Ireland. Published in 1976, The Atlas was, I believe, the very first work of its kind.

Ireland 217
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Polygynandry and avian swingers

10,000 Birds

Nice. ((** all names have been changed to protect identities and have been substituted with (almost) randomly chosen substitutes suitable for a family of Alpine Accentors.)) And their Facebook status is always stuck on “its complicated&# – a stable marriage of three males and two females. Journal of Ornithology 137 (1): 35-51 N.

2011 209