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Interesting Facts about Popular Finches and Softbills – Waxbills and Weavers

Posted by: Frank Indiviglio in Bird Behavior, Bird Breeding, Bird diet, Bird Species Profiles February 18, 2010 Comments Off on Interesting Facts about Popular Finches and Softbills – Waxbills and Weavers 7755 Views

Congo African Grey ParrotAmong the Waxbills (Family Estrildidae) we find some of the most popular of all cage birds, most of which are referred to as “finches”.  The related Weavers and Whydahs (Family Ploceidae), less commonly kept, are valued for their unique breeding and nest-building habits.  Oddly enough, only a few species of True Finches (Fringillidae) have actually made their way into finch collections.

Waxbills in Captivity

Waxbills are known for their extremely colorful plumage, but even the somberly-clad species are marked with interesting patterns.  The Gouldian Finch and Cordon Bleu sport a fantastic array of bright colors, and are well established in the pet trade.

Bengalese and Zebra Fiches, captive bred for thousands of generations, are considered to be fully domesticated by many ornithologists.

The Zebra Finch has been dubbed “The Avian Lab Mouse”.  Zebra Finch studies have led to a wide array of important discoveries bearing on human health, genetics and behavior.

Waxbill Social Behavior

Many Waxbills forage in huge flocks, within which they move, feed, preen and bathe in a highly synchronized manner.  Linked by both visual and vocal signals, flock members appear to move as a single unit.

Waxbills form strong pair bonds which are often maintained year round.  Pairs remain in close proximity even within flocks containing thousands of individuals.

Waxbills generally breed at the start of the rainy season, and their chicks are an important food source for a wide array of reptiles, mammals and raptors.  In many populations, less than 20% of the fledglings reach adulthood.

The chicks of species that nest within tree hollows and other dark locations bear luminous patches on the tongue, palate and/or bill, which apparently assist the adults in feeding the nestlings.

Weavers

Four subfamilies of Weavers are recognized – the True Weavers, Buffalo Weavers, Parasitic Whydahs and Sparrows.

True Weavers

This group contains some of the avian world’s most accomplished nest-builders.  Largely confined to Africa, many species use highly complex knots to create enclosed nests that can only be entered from below and after negotiating a 2-foot-long tunnel.  Positioned at the very tips of tree branches, these unique nests confound most predators.

Red-billed queleaMost True Weavers are extremely choosy when selecting nesting material.  Red Bishops that I cared for would accept only green beach grass presented in clumps.  The same grass offered on a tray was rejected, as were similar (well, similar to me!) grass species.

The Red-Billed Quelea is believed to be the world’s most abundant bird…a single flock may number over a million individuals.

Parasitic Whydahs

Whydahs lay their eggs in the nests of Waxbills and provide no parental care.  Males copy the songs of the birds they parasitize, and the luminous markings on the bills of their chicks mimic exactly those of their hosts.

Sparrows

Eight Sparrow species are closely associated with humans, and nest on or near their dwellings.  The widely-introduced House Sparrow, well-established in the USA, rarely strays far from human habitations.

The ground-dwelling Snow Sparrows nest at some of the highest altitudes – to 15,000 feet above sea level – of any bird.

Further Reading

Please see my upcoming blog “Finch Facts” to learn more about other popular cage birds.

Cordon Blues often nest near wasp colonies.  Please see Nesting Associations of Cordon Blues for details.

Male Pin-Tailed Whydahs have amazingly long tails that are used in courtship displays; a video of one in the wild is posted here.

 

 
Euplectes orix image referenced from wikipedia and originally posted by Manfred Werner (Tsui)

Red billed Quelea image referenced from wikipedia and originally posted by Alastair Rae

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I believe that I was born with an intense interest in animals, as neither I nor any of my family can recall a time when I was not fascinated by creatures large and small. One might imagine this to be an unfortunate set of circumstances for a person born and raised in the Bronx, but, in actuality, quite the opposite was true. Most importantly, my family encouraged both my interest and the extensive menagerie that sprung from it. My mother and grandmother somehow found ways to cope with the skunks, flying squirrels, octopus, caimans and countless other odd creatures that routinely arrived un-announced at our front door. Assisting in hand-feeding hatchling praying mantises and in eradicating hoards of mosquitoes (I once thought I had discovered “fresh-water brine shrimp” and stocked my tanks with thousands of mosquito larvae!) became second nature to them. My mother went on to become a serious naturalist, and has helped thousands learn about wildlife in her 16 years as a volunteer at the Bronx Zoo. My grandfather actively conspired in my zoo-buildings efforts, regularly appearing with chipmunks, boa constrictors, turtles rescued from the Fulton Fish Market and, especially, unusual marine creatures. It was his passion for seahorses that led me to write a book about them years later. Thank you very much, for a complete biography of my experience click here.
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