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Perhaps the most curious thing about the Great Spotted Cuckoo is its distribution, for it is both a non-breeding Palearctic migrant to Africa, and a trans-Africa migrant. According to The Birds of Africa Volume III , “In much of the tropics present throughout the year, with breeding and non-breeding birds usually indistinguishable”.
Especially the bird breeding season, which passes by at the blink of an eye. Most troubling for me, because I think of them as my birds, is the abandoned nesting attempt by a pair of Pacific Loons. This pair first appeared four years ago, and are amongst the most northerly known breeding Pacific Loons in North America.
Native snails lay 20-50 eggs at a time during the spring. Exotic snails lay 300-500 eggs at a time, lay eggs throughout the year, and are more resistant to environmental changes. Eggs of the native apple snail (left), and the exotic apple snail (right). Snail Kites now favor these ponds and breed around them.
The usual way to find an owl would be to listen to its territorial call in the breeding season (to listen and not to lure it – I oppose the playback ), but this species is even less vocal than most other owls. Egg-laying starts in late March to early April and they remain in the vicinity till early June.
Egg harvesting to sell as food was intensive then, with thousands taken annually from the breeding colonies in Chile. Egg collection for local consumption still continues at lower scale. The initial decline in the Andean Flamingo’s population appears to have started as early as the mid 20th Century.
As a youngster of 10-weeks old, it is abandoned by its parents and left to fend for itself. Each year 120,000 birds visit the island to breed from March through August in burrows that riddle the landscape. After mating, a single egg is laid and incubation duties are shared by both parents.
Oil begins to wash up on the beaches throughout May and June of 2010 May 6, 2010 Oil washes ashore on the Chandeleur Islands off the Louisiana coast, an important nesting and breeding area for many bird species. The babies that hatched from these eggs were released on Florida’s east coast.
All three species mentioned in this article breed on these islands, but the Piratic Flycatcher employs a truly piratic strategy: the breeding pair targets a recently built woven nest, often by a Yellow Oriole or Yellow-rumped Cacique but they have also been recorded targeting the nests of other flycatchers.
Due to heavy rains many clutches of Great Crested Grebes had failed, but we observed both nests with eggs (and left the area immediately) and adults with chicks, some of them piggy-backing their mothers.
Brown Pelicans in non-breeding plumage. Both are the only Pelican in their non-overlapping breeding grounds. Peruvian Pelican in non-breeding plumage. Brown Pelican in Breeding Plumage. Peruvian Pelican in breeding plumage, photo: Olaf (Creative Commons – Flickr).
We made the executive decision to abandon that trail and try another – one which proved incredibly fruitful. At the start of this new trail we accidentally flushed a White-tailed Nightjar that was sitting on a lone pink egg. Part of the flock of Laughing Gulls , all in fresh breeding plumage.
According to the HBW, when breeding, male birds do most of the incubation and parenting while females often leave the nest up to one week before the eggs hatch. According to Couzens, after laying the eggs, females sometimes immediately abandon their first mate and pair up with another male. How efficient. How surprising.
According to Tim Low (in “Where Song began”), “so easy were they to breed that by 1859 they cost less to buy in London than in Sydney.” ” Funny how the difficulty of breeding a species can be illustrated in simple monetary terms. Is it offensive to say that Australian Zebra Finches breed like rabbits?
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.
Each male builds numerous nests, most of which are rejected by the female, who will eventually select a nest she is happy with, allow the proud architect who usually hangs under his masterpiece to mate with her and then begins the breeding process. These nests can weight up to 1 ton!
The Zoo episode focuses on two Pink Pigeon couples: The Stud and Serendipity, a male and female that the zoo people hope will mate and produce a viable egg, and Thelma and Louise, a same-sex pair-bonded couple who the zoo people hope will incubate the egg and nurture the chick. On the WCS web page, Ms.
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