Northern Red-billed Hornbill (Tockus erythrorhynchus) / 2010-08-12 / mare de Kania, 3 km sud-ouest de Zinder (Niger)
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| Calao à bec rouge / Red-billed Hornbill visibility 89 |
© Peter Karels |
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Couple: mâle en haut, bec plus large, femelle en bas, bec plus fin.
Couple: male at top, larger bill, female below, bill smaller.