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and camera type for waterfowl surveys: disturbance effects and species recognition. Peer J. 4,
e1831 (2016). doi:10.7717/peerj.1831
Oro, D., Tavecchia, G.: Gaviota picofina. In: Gaviotas cabecinegra, picofina, de Audouin y tridáctila,
y gavión atlántico en España. Población en 2007 y método de censo. pp. 21–43. SEO/BirdLife,
Madrid, España (2008)
Pal, M.: Random forest classifier for remote sensing classification. Int. J. Remote Sens. 26, 217–
222 (2005). doi:10.1080/01431160412331269698
Prosper, J., Hafner, H.: Breeding aspects of the colonial Ardeidae in the Albufera de Valencia,
Spain: population changes, phenology, and reproductive success of the three most abundant
species. Colon. Waterbirds. 19, 98–107 (1996). doi:10.2307/1521952
Ratcliffe, N., Guihen, D., Robst, J., Crofts, S., Stanworth, A., Enderlein, P.: A protocol for the
aerial survey of penguin colonies using UAVs. J. Unmanned Veh. Syst. 3, 95–101 (2015).
doi:10.1139/juvs-2015-0006
Richards, J.A.: Remote Sensing Digital Image Analysis: An Introduction. Springer Science &
Business Media, Berlin, (2013)
Sardà-Palomera, F., Bota, G., Viñolo, C., Pallarés, O., Sazatornil, V., Brotons, L., Gomáriz, S., Sardà,
F.: Fine-scale bird monitoring from light unmanned aircraft systems. Ibis. 154, 177–183 (2012)
Vas, E., Lescroël, A., Duriez, O., Boguszewski, G., Grémillet, D.: Approaching birds with
drones: first experiments and ethical guidelines. Biol. Lett. 11, 20140754 (2015). doi:10.1098/
rsbl.2014.0754
Using UAVs to Map Aquatic Bird Colonies