Analysis of information sources in references of the Wikipedia article "Passer montanus" in Spanish language version.
F. remigibus rectricibusque fuscis, corpore griseo nigroque, alarum fascia alba gemina.
F. remigibus rectricibusque fuscis, corpore griseo nigroque, alarum fascia alba gemina.
F. remigibus rectricibusque fuscis, corpore griseo nigroque, alarum fascia alba gemina.
F. remigibus rectricibusque fuscis, corpore griseo nigroque, alarum fascia alba gemina.