The Weeden Foundation makes grants for biodiversity conservation in the USA and internationally. The Foundation’s international priorities are the Patagonia region of Chile, and the Altai Republic of Russia. The Foundation requests letters of inquiry (LOI) at least one month before proposal deadlines. The next deadline for applications (English, Spanish) is 12 February 2016.
More info and how to apply: http://www.weedenfoundation.org/Weeden-Foundation-Applications.htm