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One of this species’ many peculiarities is that it has a digestive system unique amongst birds: Hoatzins use bacterial fermentation in the front part of the gut to break down the vegetable material they consume, much as cattle and other ruminants do. We found Black-collared Swallows breeding in cracks among the lower riverside rocks.
In the breeding season, some 50 species were recorded here, including Little Bittern and Golden Oriole , both unusually easy to see, as well as Ferruginous Duck , Red-backed Shrike and Penduline T**s that bred here this spring – but all I managed to see was their nest ( again ) and not the inhabitants!
Parasites penetrate the skin, travel through the blood vessels and finally (if you’re lucky) settle in the urinary tract where they happily breed, doing irreversible damage to it (and if you’re less lucky they might get confused and settle inside your spinal cord or even your brain). Cattle Egret 16. Vervet Monkey c. Hamerkop 1.
We were met by several Cattle Egret in beautiful breeding plumage feeding on the grass right next to the train station. Squirrels, water monitors, lizards, wild boar, macaque monkeys and more had too often stopped us in our tracks when we heard leaves rustling or odd sounds initially!
But if we want to continue to throw a monkey-wrench into this all too cut and dried scenario, there’s also the fact that the Old World vultures had a foothold in North America up until the Neogene about 2.5 millions years ago. The California Condor has a story well-known by anyone with an interest in birds.
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