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Kirtland’s Warbler is a classic niche species; they breed in only very specific conditions, which occur in only a very specific area. this species breeds. Fortunately, there were still a handful of immature birds alive at sea, and a few years later they were back on Toroshima breeding again.
They apparently meet the criteria for inclusion in that they are regular migrants or annual visitors to specific areas of Alaska. It is pointedly not an identification guide, though there is a lot of identification information in it, and it is not a coffee table book, though every page is illustrated.
It was advisable to remove them at night, to keep them calm, to establish immediately a feeding board on which they would be fed chopped beef and egg to start, then fresh birds, rabbit or squirrel. “I’d witnessed Peregrines and Gyrfalcons in the fall of 1949 while I was doing undergraduate work at the University of Alaska.
Breeding in Northern Japan and wintering in the Phillippines, some seem to take a migratory rest stop (and slight deviation) at the Shanghai coast. Hints of potential warming in the HBW species description: “Date of first egg-laying on Honshu now 7 days earlier than it was 25 years ago” There are also quite a few Cuckoos.
Even though the overall breeding range remains largely unchanged from that in the 1940′s, the entire coastal population has been in recent severe decline. The ecological requirements for Black Swifts to breed restrict them to a very limited supply of nesting locations. Photo from Wikipedia Commons taken by Terry Gray.
Either that, or I see them in spring with hordes of other shorebirds feeding on the eggs of Horseshoe Crabs. It has an enormous range, occurring in such far-flung locales as New Zealand, Saudi Arabia, Alaska, Greenland, and Brazil, to name just a few. Ruddy Turnstone is a Species of Least Concern according to BirdLife International.
One of the two sub-species of Red Knot occurring in North America, the Rufa subspecies breeds in the Canadian Artic Region and migrates along the east or Atlantic coast of the United States. The other sub-species, Calidris canutus roselaari , migrates along the Pacific Coast and breeds in Alaska and the Wrangel Island in Russia.
When I picture state birds, I picture the gorgeous Scissor-tailed Flycatcher of Oklahoma, the pristine white feathers of Alaska’s Willow Ptarmigan , or the haunting call of Minnesota’s Common Loon. ” Best of all, they lay between 150 and 200 eggs per year. I don’t picture chickens. Though they only weigh.1-.2
Around this time of the year, the first few waders are back in Shanghai from their breeding grounds far further up north. Generally, being back here early is not a very good sign – it may indicate a failed breeding attempt, as suggested for Asian Dowitchers in a paper on their presence in Lianyungang somewhat further north of Shanghai.
One of the more interesting aspects (in my opinion) of breeding in birds is their mating strategy. In this system, females mate and lay eggs with multiple males over the course of a breeding season, leaving males to incubate the eggs and raise the chicks. of all bird species, is polyandry. 1996, Nakamura 1998).
What the Owl Knows is organized into nine chapters: introduction, adaptation (including vision and flight), research and researchers, vocalization, courtship and breeding, roosting and migration, cognition, and two chapters on owls and humans–captive owls (not zoos, educational owls) and owls in our cultural history.
To be honest, both the robin and the flycatchers shown above remind me of the easter eggs I hunted for as a child – the same strong colors in front of a green background, same time of the year (feel free to insert your own Proust Madeleine reference here) … Bluethroats apparently are good at imitating other birds.
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