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The population of parrotlets they studied was located on one of the many huge hatos (cattle ranches) in the Venezuelan llanos, a vast swath of flat flooded savannah in the central third of the country that drains into the Rio Orinoco. She lays an egg every day or two until completing a clutch of anywhere from five to ten eggs.
One paper identified the number of flocks in their research area “by tracing their tracks in the snow” Very Cowboys and Indians. One of the threats to the Blood Pheasant comes from overgrazing by cattle. So, researchers looked at the habitat use of Blood Pheasants as related to the presence of livestock.
Second they are reliant on Horseshoe Vetch on which they lay their eggs and on which the caterpillars feed. Rabbits are now thriving again after recovering their numbers and the Kent Wildlife Trust has implemented a grazing policy at Queendown Warren, with sheep and cattle, to supplement the rabbits’ efforts.
In Europe, most of them winter south of the Sahara but an increasing share winters north of it – which sounds like an interesting research topic for people who, ahem, find such topics interesting. It is rumored that one of the researchers later became a software developer. No need to remind us all the time.
With a hardiness that belies their delicate looks (but helps explain their phenomenal success), these pioneering pigeons are already sitting on eggs at at least one location in Montana. So right now I’m feeling pretty good about Eurasian Collared-doves. It’s just that the exceptions are so much more attention-grabbing.
In the slightly frighteningly named journal “Science of The Total Environment”, there is a paper on organochlorine compounds in Purple Heron eggs nesting in sites located around a chloralkali plant (Ebro River). Summary result: relevant chemicals emitted by the plant can be found in the eggs. Bye, bye, Lesser Coucal.
Bolivar Flats Shorebird Sanctuary was an amazing and unexpected treat, but that’s because I failed to do my research. It’s only 15 minutes north of High Island, though in neighboring Chambers County (High Island is part of Galveston County, good to know if you’re going to be researching eBird checklists).
According to the HBW, when breeding, male birds do most of the incubation and parenting while females often leave the nest up to one week before the eggs hatch. According to Couzens, after laying the eggs, females sometimes immediately abandon their first mate and pair up with another male. But maybe that is actually a good thing.
Cattle Egret – Bubulcus ibis. Eastern Egg Rock. Eastern Egg Rock. Eastern Egg Rock. Forestry Research Institute of Malaysia. Forestry Research Institute of Malaysia. Airport Mangroves. 01 Jan 2017. Reddish Egret – Egretta rufescens. Airport Mangroves. 01 Jan 2017. Western Australia. 07 Jul 2017.
Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh.
Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh.
Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh.
Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Stormwater Treatment Area 5/6. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Stormwater Treatment Area 5/6. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Stormwater Treatment Area 5/6. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Stormwater Treatment Area 5/6. 13 Jan 2018. 01 Jan 2018.
Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Stormwater Treatment Area 5/6. 13 Jan 2018. Western Australia. 06 Jan 2018.
Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. Hopland Research and Extension Center (restricted access). Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). 13 Jan 2018. 01 Jan 2018.
Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh. Cattle Egret – Bubulcus ibis. 03 Feb 2018. Virginia Rail – Rallus limicola. 03 Feb 2018.
International Birding and Research Center Eilat (IBRCE). Cattle Egret – Bubulcus ibis. International Birding and Research Center Eilat (IBRCE). International Birding and Research Center Eilat (IBRCE). Cattle Tyrant – Machetornis rixosa. International Birding and Research Center Eilat (IBRCE).
Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Jamaica Bay, Big Egg Marsh. Cattle Tyrant – Machetornis rixosa. Hopland Research and Extension Center (restricted access). Hopland Research and Extension Center (restricted access). Jamaica Bay, Big Egg Marsh.
The Large-billed Crow ( video ) is one of the natural enemies – in the study above, it predated 19 eggs from four pitta nests. of researchers looking for chemical contaminants in the environment. This should not be a problem in Shanghai as the pitta has not been reported to breed here.
I have written about the interesting sex life of these jacanas a few times already (short version: female mates with male, lays a bunch of eggs for him to incubate and raise the chicks, leaves him, finds another male, repeat). Apparently, after a male first mates with a female, he throws out the first one or two eggs she lays in their nest.
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