Darf der Tierschutz den machen was er will?
Diskutiere Darf der Tierschutz den machen was er will? im Allgemeines Vogelforum Forum im Bereich Allgemeine Foren; sonntag grins /Schutzgebühr ist höher als importpreis/...
- 13.02.2003, 19:42 #21
ist stellingen hoffe röhre ist frei will 18uhr da sein
grins /Schutzgebühr ist höher als importpreis/
- 13.02.2003, 19:53 #22
hab für klein-lorchen (nymphenhenne) auch 30 € hingeblättert.
aber die sind wirklich sehr bemüht!!! und im gegensatz zu anderen TH auf spenden und schutzgebühren angewiesen.
freut mich trotzdem, daß morchen ein so super zuhause gefunden hat.
- 13.02.2003, 20:08 #23
- 13.02.2003, 20:40 #24
- 13.02.2003, 21:14 #25
man diese ausagen....hm,hm...
liebe grüße rena
- 13.02.2003, 22:07 #26
Für alle die Intresse habe, bei der APN geht es nun in einem neuen Tread um das Thema welches hier nicht mehr geschrieben werden darf, also dann, wer mehr wissen will einfach schauen und nachfragen und schreiben, viel Spaß.
- 13.02.2003, 22:11 #27
seht alles geht wenn man will
hat streelow veröffentlicht:
A model for future releases of Puerto Rican parrots
Formerly abundant throughout Puerto Rico, the Puerto Rican parrot (Amazona vittata) is now considered one of the ten most endangered birds in the world. Currently, there exists only one wild population of approximately 35–40 individuals in the Caribbean National Forest of eastern Puerto Rico. In addition, two captive populations totalling around 105 birds are currently held in separate aviaries in Puerto Rico. The primary function of these captive populations is to provide a sustainable source of parrots for release into the wild to bolster the current wild population, as well as for eventual re-establishment of a second wild population elsewhere in Puerto Rico.
Captive-reared Puerto Rican parrots were previously released in the Caribbean National Forest in 1985. However, the small number (three individuals) released was insufficient to evaluate viability of the technique. A similar release of 18 captive-reared Hispaniolan parrots (Amazona ventralis) was conducted in the Dominican Republic in 1982, but was also inconclusive.
From 1997 to 1999, we released 49 captive-reared Hispaniolan parrots in Parque Nacional del Este, a 42,000 ha area of subtropical dry and moist forests in south-eastern Dominican Republic. Each bird was radio-transmittered and monitored for up to one year to determine survival, movements and habitat use. Our goal was to develop a release strategy for Puerto Rican parrots and gain insights about potential survival of released birds. The intrinsic demographic and genetic value of captive Puerto Rican parrots for the recovery of the species precluded their use during the developmental phase of a release strategy. We used Hispaniolan parrots because they are the closest relatives of Puerto Rican parrots, are not critically endangered, and have been used successfully as surrogate parents for Puerto Rican parrots. Their value as a biological model for Puerto Rican parrots was enhanced because the released parrots were reared in the same aviaries as Puerto Rican parrots destined for future releases in Puerto Rico. Finally, because Hispaniolan parrots are native to the Dominican Republic, the releases were conducted there in order to release parrots in historical occupied habitat, and to avoid exacerbating the problem of introduced exotic psittacines in Puerto Rico.
The parrots were released from four separate cages which were also used as on-site training and acclimation facilities. Measuring 3.6 m ´ 1.5 m ´ 2.1 m high, each cage contained four parrots and provided space for flight. Cages were suspended approximately two metres above ground level. The birds were acclimated on-site for a minimum of 40 days, during which they were exposed to a wide variety of locally occurring native foods. Use of cultivated agricultural products was avoided, as the objective was to accustom parrots only to those species they would later encounter within the study area and to minimize the possibility that they would become local crop depredators. Each parrot was also equipped with a `dummy' radio-collar of the same weight (11 g) and configuration as the actual radio-transmitter in order to accustom them to the device before release. They were also subjected to an exercise program (e.g. forced flight) in an effort to maintain or increase flight stamina and ability. Approximately two to three days before release, each parrot was given a complete veterinary examination and functioning radio-transmitters were attached. On release days, cages were opened before dawn and the birds allowed to exit at will.
Of the 24 parrots released during 1997, five died within five days of release, and five more died shortly after onset of the dry season. Another two fell victim to hawk predation. In contrast, none of the 25 parrots released in 1998 died within five days of release. In fact, birds of the first 1998 release (29 June) had already survived for ten weeks when Hurricane Georges hit the park on 22 September.
Two modifications to pre-release training and conditioning protocols may have contributed to differences in early survival. During the 1997 releases, we felt that the parrots did not exhibit good flying skills. Thus, we subjected 1998 birds to a more rigorous exercise routine, and median keel scores (index of flight muscles) increased significantly. The second modification consisted of reducing blood samples collected 2–3 days prior to release in 1998 (i.e. 1 instead of 2 cc per bird) or not collecting a sample at all. Although parrots can replace 2 cc of blood within 3–7 days, it is possible that birds released in 1997 were weaker when released than birds in 1998.
Our work sheds light on the importance of timing of release. We found that survival rates measured over the dry season were higher for birds released in October than in December. A plausible explanation may be that birds released in October had a longer opportunity to exploit higher levels of food availability, which is greater during late summer–fall (rainy season) than during winter–early spring (dry season).
These results were incorporated into the pre-release training and acclimation of Puerto Rican parrots scheduled for release during the summer of 2000. For example, on-site acclimation cages in Puerto Rico have an internal volume twice that of cages used in the Dominican Republic. This allows additional flight space per bird and facilitates maintenance of flight ability and stamina prior to release. Birds will be subjected to forced flight training at least as frequent and intensive as during 1998 pre-release training in the Dominican Republic. Pre-release physical exams will be conducted 5–7 days prior to release, and blood samples will be limited to 1 cc per bird. Finally, predator aversion training will be conducted using a live red-tailed hawk while birds are housed at the actual release site. We hope that these modifications will aid in reducing or eliminating early, post-release mortality.
Abridged from Thomas H. White, Jaime A. Collazo, Francisco J. Vilella and Simon Guerrero in Re-introduction News No. 19 (November 2000)
- 14.02.2003, 01:07 #28
was soll´die fachsimplerei und die eigentlichen thematiken...im sinne der tiere...
ich will zu mindest wissen....was darf,oder nicht der TS...:o
und mein englisch ist nicht so perfekt...ergo,kann nicht alles verstehen,sorry
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- 14.02.2003, 05:38 #29
Edit: Alternativ wäre eventl. der Deutsche Tierschutzbund eine gute Anlaufstelle für Deine Fragen.
- 14.02.2003, 09:41 #30
ist noch zu früh zum übersetzen, mein hirn schläft noch.
jeden tag eine gute tat, motto der pfadfinder, wegen mohrenpapa.