stratum-corneum
发表于 2025-3-25 05:44:54
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Rct393
发表于 2025-3-25 08:51:22
Erwin Leibfriedn many species, colours and plumage features are important in recognition and display, which may be disrupted by additional markers. Tarsal ringing (Spencer, chapter 5) has been used very successfully for many years on large numbers of birds, and other marking methods should be considered only when
话
发表于 2025-3-25 15:42:22
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WAX
发表于 2025-3-25 18:07:39
Erwin Leibfriedined to birds reared in captivity. The chief reason for this is that the close ring has to be passed up over the part-grown foot to its final position on the tarsus and this operation has to be carried out before the bird, if it is a passerine, is six or seven days old at the latest. The reason for
画布
发表于 2025-3-25 22:57:43
Erwin Leibfried role in migration), Menner (that it casts a shadow), and Barlow (that it blocks intraocular light rays scattered from the sun’s image)..New measurements, supported by observations on a scale model, show that the pectén is precisely placed to produce a sharply defined shadow on the field of light sc
火光在摇曳
发表于 2025-3-26 01:16:04
Erwin Leibfried seconds, the sun formed a spot on the horizontal film at the bottom of the camera. With the aid of the sun’s position, known from nautical tables, the direction of fixation of the pigeon could be calculated and associated with landmarks at the horizon. Preliminary results show that many sun spots a
opportune
发表于 2025-3-26 07:54:27
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resistant
发表于 2025-3-26 12:31:23
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比目鱼
发表于 2025-3-26 12:53:09
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懒洋洋
发表于 2025-3-26 18:36:19
Einleitungilosophie überhaupt. Obwohl der Verfasser genötigt war, öfter auf Edmund Husserl und die Arbeiten Gerhard Funkes und seiner Mainzer Schüler zurückzugreifen , glaubt er, nicht Philosophie zu treiben, sondern eben, wie man sagen könnte, allgemeine oder systematische (besser: kritische) Literaturwis