[CT Birds] Trumpeter Swans (LONG)
dennisvz at optonline.net
Mon Mar 29 23:54:52 EDT 2010
How about a negative proof of acceptance.?
If you wanted to exterminate the species, would it be possible?
If no it is established.
On Mar 29, 2010, at 11:31 PM, Mark Szantyr wrote:
> I have copied the text from the ARCC report dealing with Monk
> Parakeets acceptance to the state list. It sheds a bit of light on
> the process and criteria needed to establish an "exotic" bird on
> the state list.
> MONK PARAKEET (Myiopsitta monachus). This species is accepted to
> the state list based on a population that seems to have grown from
> a core group established in Fairfield county since the early 1970s
> (L. Pearson in litt.). The species now nests at numerous localities
> along the coast from Darien to West Haven and inland to Danbury.
> The total statewide population is around 400 individuals today, but
> the exact number is very hard to determine due to the nomadic
> nature of this species. The population is increasing and new
> nesting colonies are being found regularly. The population of Monk
> Parakeets in Connecticut appears to meet all of the criteria for
> introduced species established in the ABA Checklist fourth edition
> (DeBenedictis et al. 1990)-a more-or-less contiguous population
> exists that survives normal mortality and nest failure, produces
> offspring that maintains or increases the population level, and is
> not directly dependent on human support.
> The American Birding Association (ABA) recently added this species
> to its checklist of North American birds based on populations in
> Florida and Texas (Birding 26:96). In that report, the ABA
> checklist committee questioned the status of other populations,
> including those in New England, stating that they were sustained by
> human assistance, e.g. feeding. The Connecticut committee disagrees
> with that opinion, citing a careful review of this species in
> Connecticut by Olivieri and Pearson (1992), who indicate that Monk
> Parakeets are thriving and expanding here and are not dependent on
> humans for food any more than are, for example, Northern Cardinal
> or House Finch, which in New England are both comparatively
> recently established breeders that probably took advantage of bird
> feeders to survive winters. While bird seed is the predominate food
> in winter, these parrots have been seen feeding on frozen fruits,
> plant buds, and grass in winter. The diet and breeding times are
> similar to those reported for a colony near Chicago (Hyman and
> Pruett-Jones 1995). Juveniles are first seen in Connecticut
> colonies usually in July. Monk Parakeets apparently survived
> eradication efforts in Connecticut in the early to mid-1970s. A
> comparison of the numbers reported by Niedermyer and Hickey (1977)
> with those in Olivieri and Pearson (1992) for the early 1970s shows
> that the Connecticut population was likely underestimated in those
> years as reported in the earlier study.
> While the committee is uneasy with a generalization that this
> species is now "officially established," members agree that the
> Connecticut population is similar to other populations in the
> United States. In some ways, the Monk Parakeet is probably more
> self-sustaining in the state than are Bobwhite and Ring-necked
> Pheasant, which rely on restocking in parts of their range within
> the state. Further study is needed on population growth and diet of
> the Monk Parakeet in Connecticut.
> Mark S. Szantyr
> 80 Bicknell Road #9
> Ashford, Connecticut 06278
> Birddog55 at charter.net
> ----- Original Message ----- From: "Mark Szantyr"
> <birddog55 at charter.net>
> To: <ctbirds at lists.ctbirding.org>
> Sent: Monday, March 29, 2010 11:23 PM
> Subject: Re: [CT Birds] Trumpeter Swans-YES
>> For interesting reading about the "natural" range of Trumpeter
>> Swans and the introduction / re-introduction program, The Birds of
>> North America monograph by Cornell has a lot of interesting stuff
>> to consider. Interestingly, just a few days ago, and before these
>> swans were found, I was in a conversation with a notable western
>> waterfowl guy and he was going off about what he termed, "the
>> farce" of reintoducing a bird like the Trumpeter Swan to an area
>> where they may not have actually occurred....Birding is soooooo
>> much fun!
>> Mark S. Szantyr
>> 80 Bicknell Road #9
>> Ashford, Connecticut 06278
>> Birddog55 at charter.net
>> This list is provided by the Connecticut Ornithological
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> This list is provided by the Connecticut Ornithological Association
> (COA) for the discussion of birds and birding in Connecticut.
> For subscription information visit http://lists.ctbirding.org/
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