Desertas petrel: Difference between revisions
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'''Deserta's Petrel''' (''Pterodroma desertae'') is a newly described species recently split from [[Fea's Petrel]] (''Pterodroma feae'') and previously included as a subspecies of ''[[Pterodroma mollis]]''. This species breeds on [[Bugio Island]] in the [[Desertas Islands|Desertas]] off [[Madeira]]. |
'''Deserta's Petrel''' (''Pterodroma desertae'') is a newly described species recently split from [[Fea's Petrel]] (''Pterodroma feae'') and previously included as a subspecies of ''[[Pterodroma mollis]]''. This species breeds on [[Bugio Island]] in the [[Desertas Islands|Desertas]] off [[Madeira]]. |
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== Morphological Differentiation == |
== Identification & Morphological Differentiation == |
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As all three of |
As all three of species in the ''Pterodroma feae/madeira/desertae'' complex were once believed to be subspecies of a single species: ''Pterodroma mollis''. Well-understood is the extreme difficulty in telling them apart. A summary of data from a morphological study sheds light on the issue:<ref>http://dx.doi.org/10.1111/j.1474-919X.1995.tb03241.x</ref> |
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* In overall size ''feae'' is closer to ''deserta'' and both are bigger than ''madeira'' ('''wing length''' - ''f'':262, ''d'': 264, ''m'': 248; '''tarsus''' - ''f'':34.7, ''d'': 35.2, ''m'': 32.7). |
* In overall size ''feae'' is closer to ''deserta'' and both are bigger than ''madeira'' ('''wing length''' - ''f'':262, ''d'': 264, ''m'': 248; '''tarsus''' - ''f'':34.7, ''d'': 35.2, ''m'': 32.7). |
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* Bill length once again similar in ''feae'' and ''deserta'' and both larger than ''madeira'' (''f'':29.0, ''d'': 28.6, ''m'': 26.3). |
* Bill length once again similar in ''feae'' and ''deserta'' and both larger than ''madeira'' (''f'':29.0, ''d'': 28.6, ''m'': 26.3). |
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Revision as of 10:52, 15 February 2010
| Deserta's Petrel | |
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Not Yet Evaluated (2010)
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| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | |
| Species: | P. desertae
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| Binomial name | |
| Pterodroma desertae unknown
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| Synonyms | |
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Pterodroma mollis deserta Pterodroma feae desertae | |
Deserta's Petrel (Pterodroma desertae) is a newly described species recently split from Fea's Petrel (Pterodroma feae) and previously included as a subspecies of Pterodroma mollis. This species breeds on Bugio Island in the Desertas off Madeira.
Identification & Morphological Differentiation
As all three of species in the Pterodroma feae/madeira/desertae complex were once believed to be subspecies of a single species: Pterodroma mollis. Well-understood is the extreme difficulty in telling them apart. A summary of data from a morphological study sheds light on the issue:[1]
- In overall size feae is closer to deserta and both are bigger than madeira (wing length - f:262, d: 264, m: 248; tarsus - f:34.7, d: 35.2, m: 32.7).
- Bill length once again similar in feae and deserta and both larger than madeira (f:29.0, d: 28.6, m: 26.3).
- Bill depth by far biggest in deserta, lowest in madeira, and intermediate in feae (f:11.9, d: 12.9, m: 10.5).
In terms of ratios:
- (Bill length/wing length) (f:11.1%, d: 10.8%, m: 10.6%) is rather similar in the three taxa.
- (Bill length/bill depth) (f: 2.44, d: 2.22, m: 2.53) is lowest in deserta, and highest in madeira. In feae it is intermediate, but more than twice closer to madeira than to deserta.