fungus India Kanangi Karkala karnataka leathery poroid mushrooms mushroom Polypore rotting logs Western Ghats frog green hunt leaves marsh monsoon pond rest still water bird birding frugivorous Kotroo Megalaima viridis Small Green Barbet White Cheeked Barbet bokeh forest fresh fresh leaves leaf pink purple spring tender vein background brown grunge pattern spots surface texture tile white wood texture