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This year is the eighteenth year since we discovered our first Pied Oystercatcher nest on Cable Beach in Broome and it didn’t take us long to realise that they are not at all successful at raising young due to egg and chick predation. Each year we hope for anther success, but so far it has not happened. Pied Oystercatcher nest.
The European Breeding Bird Atlas 2 makes interesting reading. Originally confined to the Arctic, breeding [of Barnacle Geese] is now confirmed throughout much of the Baltic coast S North Sea. A pair did lay infertile eggs in Iceland in 2018, but that’s about the only record I can find).
It didn’t occur to me till I started reading The Falcon Thief: A True Tale of Adventure, Treachery, and the Hunt for the Perfect Bird that there was also a possible threat to the eagle herself: poachers, who steal raptor eggs and chicks. McWilliam realizes he’s dealing someone special, a career falcon egg-thief.
We have been busy walking the beach and keeping an eye on our local Pied Oystercatchers and the two pairs that laid their eggs earliest for the 2018breeding season and successfully hatched out their chicks have now lost their chicks to predation. They have only laid one egg so far and another may be laid within a day.
A section in the Appendix, “Rare Shorebird Vagrants,” lists 16 additional species that do not show up annually in North America but who have more than ten records; the list notes where the species breed and where their vagrant paths have taken them within North American borders.
Two weeks ago I introduced you to two pairs of our Pied Oystercatchers that were early egg layers this year and this week the eggs have hatched out after twenty eight days of incubation. Both pairs of Pied Oystercatchers are in a very public area of Cable Beach, but they are always successful with their egg incubation each year.
One paper describes them breeding in a human settlement in abandoned clay jars. ” While this species is not explicitly associated with infanticide, the fact that the bird lays 1-3 eggs but only ever raises one chick also implies that the species should also be closely watched by child protection agencies.
Scientists were largely limited to studies birds in breeding colonies, at least those we knew about and that were accessible (and, if you think that’s a complete list, you haven’t read the news that came out this week about a new colony of Adélie penguins found in the Danger Islands, Antarctica). Technology to the rescue!
Sadly, they no longer breed in Algeria, while in Turkey no free-flying birds remain. (In Storks, Ibises and Spoonbills of the World states that “disturbance by local people, tourists, and egg and zoo collectors has similarly reduced the colonies, and more protection is vital”. In 1890 an estimated 3,000 pairs nested in Birecik.)
There are photos of parent birds on the nest, baby birds in the nest, and the nest without parent, holding a clutch of blue eggs. They are, of course, of antpittas building or incubating eggs on a nest. Many of these accounts include unpublished information from Greeney’s own research. Organization. Antpittas and Gnateaters.
The guide, one of the last offerings in the Peterson Field Guide series from publisher HMH, shows photos of nests of most North American species and describes nest structure, location, how the bird makes the nest, number of eggs, and what the eggs look like. Donna). ==. Tristan). ==.
This may have been partly a leftover from the Victorian fascination with egg collecting (the infamous passion known as oology), but probably more from people’s burgeoning interest in the nests and eggs found in their gardens and fields, gateway artifacts to a newer hobby called birdwatching. Baicich and Colin J.
A paper titled “Crested Goshawk Accipiter trivirgatus may adapt well to life in urban areas across its range in Asia” already made the same observation in 2018. Apparently, after a male first mates with a female, he throws out the first one or two eggs she lays in their nest. But it is all for science, I hear them say.
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