1. Spatial and seasonal variation in abundance within an insular grey parrot population

   Valle, S., Collar, N. J., Harris, W. E. & Marsden, S. J., Dec 2017, In: African Journal of Ecology. 55, 4, p. 433-442

   Research output: Contribution to journal › Article › peer-review

2. Status and trends of the seabirds breeding at Tinhosa Grande Island, São Tomé e Príncipe

   Valle, S., Barros, N. & Wanless, R., 2014, BirdLife International, Cambridge, UK. 27 p.

   Research output: Book/Report › Commissioned report

3. Published

   Trapping method and quota observance are pivotal to population stability in a harvested parrot

   Valle, S., Collar, N., W. Edwin, H. & Marsden, S., Jan 2018, In: Biological Conservation. 217, p. 428-436

   Research output: Contribution to journal › Article › peer-review

4. Using encounter rates as surrogates for density estimates makes monitoring of heavily-traded grey parrots achievable across Africa

   Marsden, S. J., Loqueh, E., Takuo, J. M., Hart, J. A., Abani, R., Ahon, D. B., Annorbah, N. N. D., Johnson, R. & Valle, S., 2015, In: Oryx. 50, 4, p. 617-625

   Research output: Contribution to journal › Article › peer-review

5. Published

   What can the abundance of Grey Parrots on Príncipe Island tell us about large parrot conservation?

   Valle, S., Collar, N. J., Melo, M. & Marsden, S. J., 2021, In: Journal of Tropical Ecology. 36, 6, p. 293- 297

   Research output: Contribution to journal › Article › peer-review