The picture shows a juvenile Red-billed Oxpecker looking for ticks inside of a White Rhino’s nose. The Oxpecker’s bill is black because he is not an adult yet.
Lisa W. (commented on my blog) got closest to the correct answer – Well done!
More about …
Oxpeckers are endemic to the savanna of Sub-Saharan Africa. Their name arises from their habit of perching on large mammals, eating ticks and other parasites. Oxpeckers feed exclusively on the backs of large mammals. The smallest regularly used species is the Impala. Some potential Oxpecker hosts are intolerant of their presence. Elephants and Waterbuck will actively dislodge the Oxpeckers when they land.
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