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245	0	0	_aDiscriminant Criteria for Field Sexing in the Eurasian Tree Sparrow by Combining Body Size and Plumage Features / _cSergio González, Francisco Morinha, Diego Villanúa, Lander Goñi, Guillermo Blanco.
260			_a[S.l.] : _bMDPI, _c2022.
336			_atexto (visual)
337			_3en línea _aelectrónico
520			_aSimple Summary We provided basic morphological information on Eurasian Tree Sparrow from the Iberian Peninsula, and sexed a sample of individuals using molecular methods, with the aim of deriving sexing criteria in the field. The use of two measurements, wing length and badge width, allows the correct sexing of more than 90% of the tree sparrows in the Iberian Peninsula using only the usual tools used in ringing programs.
520			_aThe Eurasian tree sparrow (Passer montanus) is a monomorphic passerine, for which it is impossible to differentiate between males and females based on external characteristics. Being a species frequently captured for ringing, having a reliable method to determine sex from conventional biometric measurements would facilitate its study and be very useful for the correct management and conservation of this declining species. In the present study, we used biometric measurements recorded in 66 individuals captured with mist nets in communal roosts in northern Spain during the winter and sexed them using molecular techniques. We conducted a discriminant function analysis (DFA) to derive equations that allowed us to determine the sex of the specimens from some of the measurements recorded in the field. Significant differences were found between males and females in wing length, third primary length, badge width and height and body weight. The DFA provided two functions that correctly classified the sex of 94.7% of the individuals using wing length and badge width, and 98.2% if weight was added to the analysis. Our results allow sexing from measurements that can be easily recorded in the field with the tools commonly used in banding sessions and without the need for additional training. Considerations of Bergmann’s and Allen’s rules on body size and the use of DFA in different populations are discussed.
524			_aGonzález, S., Morinha, F., Villanúa, D., Goñi, L., Blanco, G., 2022. Discriminant Criteria for Field Sexing in the Eurasian Tree Sparrow by Combining Body Size and Plumage Features. Birds 3(4), 402-409. https://doi.org/10.3390/birds3040027
591			_aORNITOLOGIA
592			_aORNITOLOGIA
650			_abiometry _99552
650			_aDFA _91442377
650			_agenetic _91442378
650			_aringing _99357
650			_asexing _91442379
655			_aArtículo científico _99312
700	1		_aGonzález, Sergio _9723526
700	1		_aMorinha, Francisco _91442380
700	1		_910924 _aVillanúa, Diego _d1979-
700	1		_aGoñi, Lander _91442381
700	1		_aBlanco, Guillermo _9850815
710	2		_aAranzadi zientzia Elkartea _eFIRMA _91442382
856			_uhttps://www.mdpi.com/2673-6004/3/4/27
942			_2cdu _cPUBL