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The local Bald Eagles are getting busy, I suspect there is an egg in the nest. There is a bit of science news. The zoo has already identified several species like the huge monkey-eating Philippine eagle that are at once distinct, endangered, and suffer from lack of attention. All I see are their buts.
If you have always wondered what the minimum anesthetic concentration for isoflurane and sevoflurane for the Crested Serpent-eagle is, science has an answer. While serpent means large snake, the Crested Serpent-eagle also eats frogs, as this video shows.
Recent studies in Sri Lanka have revealed that, upon sighting a predator, a drongo will imitate the alarm calls of at least 4 other bird species (babblers, laughing thrushes, bulbuls, and others), as well as the call given by the specific predator, i.e. a giant squirrel or eagle.
The tiercels (young Peregrines) must deal with Golden Eagles, Ravens, adult Peregrines, and foxes; they must also learn to navigate the skies and make their own kills, luckily these skills appear to be innately learned. It’s not easy. Well-researched and footnoted, these sections never feel disconnected from the more personal sections.
As the national bird of Namibia, Zambia, and Zimbabwe, the African Fish Eagle is usually very busy whenever it stays in these countries, giving speeches, opening shopping centers, etc. However, it is kind of sophisticated in that the females lay very individualized eggs in order to be able to detect the added eggs of parasite cuckoo finches.
If we were just birders, or photographers, this would be dreadful behavior, but we were here to watch people engaged in Science. And Science requires Sacrifice. The aim of the game was to band raptors, and specifically to band Golden Eagles. Do I sound facetious? I’m not. To understand, and thus to protect.
The photographs are from VIREO, the ornithological image collection associated with the Academy of Natural Sciences of Drexel University, which licenses bird photographs to many guides and reference books. Bald Eagle, for example, is still said to be “formerly more widespread” though the range map shows expansion.
She lives part-time in Uruguay and is co-director of the Fiction Meets Science program at the University of Bremen, Germany, which seeks to bridge the “two cultures” of science and literature. The novel works, mostly, and who better than Gaines to make it so? They fly at night and end up in places you wouldn’t expect them.”.
Unfortunately, the Ashy Drongos did not exactly do what he predicted that they would do – mob potential predators more frequently during the breeding season and mob the more dangerous predator (in this case, the Black Eagle) more intensely.
Jennifer Ackerman points out in the introduction to What the Owl Knows: The New Science of the World’s Most Enigmatic Birds , that we don’t know much, but that very soon we may know a lot more. What the Owl Knows: The New Science of the World’s Most Enigmatic Birds is a joyous, fascinating read.
But seriously, Science has a more interesting set of answers, and some recently published research on European Robins helps to examine this question in some detail. A robin has a red breast so another robin does not mistake it for an eagle. Applied Animal Behaviour Science Volume 29, Issues 1-4, February 1991, Pages 403-451 a.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Crested Serpent-Eagle – Spilornis cheela. Brown Snake-Eagle – Circaetus cinereus. 13 Jan 2018.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Black Hawk-Eagle – Spizaetus tyrannus. Ornate Hawk-Eagle – Spizaetus ornatus. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Black Hawk-Eagle – Spizaetus tyrannus. Ornate Hawk-Eagle – Spizaetus ornatus. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Brown Snake-Eagle – Circaetus cinereus. Martial Eagle – Polemaetus bellicosus. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Stormwater Treatment Area 5/6.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Stormwater Treatment Area 5/6.
Jamaica Bay, Big Egg Marsh. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Black Hawk-Eagle – Spizaetus tyrannus. Ornate Hawk-Eagle – Spizaetus ornatus. 13 Jan 2018. 01 Jan 2018.
Golden Eagle – Aquila chrysaetos. Ornate Hawk-Eagle – Spizaetus ornatus. Black Hawk-Eagle – Spizaetus tyrannus. Wedge-tailed Eagle – Aquila audax. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. 24 Mar 2018. 24 Mar 2018.
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