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Showing results 1 to 18 of 18
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Search: Posts Made By: Jim Mountjoy
Forum: Swarovski Sunday 25th February 2018, 18:00
Replies: 7
Views: 1,133
Posted By Jim Mountjoy
Swarovski EL 10X32

I have not seen much commentary about this version in these pages. I suspect that this is because they are not big sellers, but is this because of an assumption that this is a poor combination of...
Forum: Bird Taxonomy and Nomenclature Sunday 28th August 2016, 05:32
Replies: 61
Views: 6,184
Posted By Jim Mountjoy
I certainly found it very interesting to read Van...

I certainly found it very interesting to read Van Remsen's proposal. He basically used the same 'method' that I did of drawing a line at a somewhat arbitrary line through Prum et al.'s phylogeny to...
Forum: Opus Discussion Area Thursday 25th August 2016, 21:12
Replies: 4
Views: 3,620
Posted By Jim Mountjoy
The third photo on this page shows two Bohemian...

The third photo on this page shows two Bohemian Waxwings (an ASY in foreground, a SY behind), and should not link to the Cedar Waxwing page.
Forum: Opus Discussion Area Thursday 25th August 2016, 21:10
Replies: 4
Views: 3,620
Posted By Jim Mountjoy
Cedar Waxwing

Discussion thread for Cedar Waxwing (http://www.birdforum.net/opus/Cedar Waxwing). If you would like to add a comment, click the Post Reply button.
Forum: Bird Taxonomy and Nomenclature Thursday 25th August 2016, 17:04
Replies: 61
Views: 6,184
Posted By Jim Mountjoy
I did consider using an Epoch boundary or some...

I did consider using an Epoch boundary or some other geological marker as my criterion rather than an arbitrary 'just a bit older than the Passeriformes'. A major reason for not doing so is that I...
Forum: Bird Taxonomy and Nomenclature Thursday 25th August 2016, 16:48
Replies: 61
Views: 6,184
Posted By Jim Mountjoy
I would argue that it is better to let...

I would argue that it is better to let evolutionary history tell us how many species are in an order, rather than to have a preconceived idea of how many species should be in an...
Forum: Bird Taxonomy and Nomenclature Thursday 25th August 2016, 16:34
Replies: 61
Views: 6,184
Posted By Jim Mountjoy
I don't think that 'amount of evolution that has...

I don't think that 'amount of evolution that has occurred' is really the criterion we should be using for determining hierarchical ranks, even assuming that we could objectively measure this. ...
Forum: Bird Taxonomy and Nomenclature Wednesday 24th August 2016, 22:02
Replies: 61
Views: 6,184
Posted By Jim Mountjoy
Are you suggesting that you would accept a split...

Are you suggesting that you would accept a split of Apodiformes and Trochiliformes, but you would not recognize the Aegotheliformes? This surprises me a bit, as I feel that there is some consensus...
Forum: Bird Taxonomy and Nomenclature Wednesday 24th August 2016, 21:11
Replies: 61
Views: 6,184
Posted By Jim Mountjoy
How many avian orders are there?

I have been wondering recently if we can now come up with a better answer to the question of how many orders of birds should be recognized. Of course, an order (or any other higher taxonomic...
Forum: Bird Taxonomy and Nomenclature Wednesday 18th July 2012, 18:06
Replies: 41
Views: 9,258
Posted By Jim Mountjoy
Actually, I guess if they are accepting Lerner et...

Actually, I guess if they are accepting Lerner et al. 2011, they should have done away with the Drepanidinae and stuck the Hawaiian honeycreepers next to Carpodacus, not Haemorhous. Maybe next...
Forum: Bird Taxonomy and Nomenclature Wednesday 18th July 2012, 17:26
Replies: 41
Views: 9,258
Posted By Jim Mountjoy
In the absence of any statement to the contrary,...

In the absence of any statement to the contrary, I guess Common Rosefinch remains in Carpodacus according to the AOU (versus Erythrina). Just an oversight, or a taxonomic opinion?
Forum: Bird Taxonomy and Nomenclature Friday 30th July 2010, 16:02
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
Looking back at some posts, I think I should...

Looking back at some posts, I think I should clarify that I would NOT support retaining the old name for one of the split species in all cases. For example, new names for Alder and Willow...
Forum: Bird Taxonomy and Nomenclature Friday 30th July 2010, 15:51
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
This is a BETTER argument than the one advanced...

This is a BETTER argument than the one advanced by Joe Morlan (which specifically referred to pre-split records), but I don't feel that the potential for confusion here really outweighs the confusion...
Forum: Bird Taxonomy and Nomenclature Friday 30th July 2010, 15:10
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
I am afraid that your argument doesn't work for...

I am afraid that your argument doesn't work for me. You actually have the same information available from these old data regardless of whether one taxon retains the old name or not after a split. ...
Forum: Bird Taxonomy and Nomenclature Friday 30th July 2010, 09:43
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
Winter Wren and other wren names

I have to add my voice to the apparent minority (on this forum) who are pleased that the NACC has kept Winter Wren for the eastern North American form. My primary reason for liking this decision is...
Forum: Bird Taxonomy and Nomenclature Wednesday 28th July 2010, 23:42
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
how conservative is the AOU checklist?

It seems to me that the NACC is really quite conservative, and sometimes I appreciate that. I happen to agree that such species level splits as the Herring Gulls are not sufficiently supported to...
Forum: Bird Taxonomy and Nomenclature Wednesday 28th July 2010, 17:11
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
passerine ordering, and names

The current position of the Fringillidae, directly following the 'nine-primaried' passerines, is compatible with a sister group relationship (if that is correct), again assuming that the AOU is not...
Forum: Bird Taxonomy and Nomenclature Wednesday 28th July 2010, 11:24
Replies: 132
Views: 31,035
Posted By Jim Mountjoy
sequence of Polioptilidae and Calcariidae

Yes, the original proposal for Polioptilidae suggested that they go before the wrens rather than after, but I am not sure how significant this is. The basic fact being reflected is that the...
Showing results 1 to 18 of 18
 


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