That Bird Blog – Bird Care and History for Pet Birds

Please see Part I of this article to learn about the role this brilliantly-colored bird played in the development of Red Factor Canaries (Serinus canarius). Also known as the Venezuelan Red Siskin or the Black Hooded Red Siskin (Carduelis cucullata), it is highly endangered in the wild, but fortunately breeds well in captivity.

Natural History

Red Hooded Siskins barely top 4 inches in length, but make up in color what they lack in size.  Males, clad in vermillion, red and black, are simply spectacular.  They are native only to northeastern Columbia, northern Venezuela and Trinidad, where they favor dry scrubland and semi-wooded savannahs.  Read More »

Spring brings with it a real treat for US birders – the return of the 13 species of Hummingbirds that nest here.  Growing up in NYC, I was able to see only 1, the Ruby Throated Hummingbird, but I did not lament that fact at all.  Like all of its relatives, this little gem never failed to put on an enthralling show when it stopped by. Read More »

Like most old zookeepers, I have a soft spot for old animals.  I’ve been fortunate in having had the chance to care for a number of birds that survived to record longevities – a Pell’s Fishing Owl and Smoky Eagle Owl of 50+ years, a tiny Egyptian Plover that lived into its 20’s, and any number of Parrots.  But it is a “50-something”-year-old Marabou Stork (Leptoptilos crumeniferus), known to his Bronx Zoo caretakers as “Jake”, who stands out most vividly in my mind. Read More »

Surprisingly, a rare little bird from South America is responsible for all the red and orange Canaries (Serinus canarius) in existence today.  Known also as the Venezuelan Red Siskin or the Black Hooded Red Siskin, this brilliant songster (Carduelis cucullata) “donated” the red genes responsible for the birds that have come to be known as Red Factor Canaries.

A Pairing of Different Species

New color phases of birds are produced by breeders all the time, but the story behind Red Factor Canaries has an odd twist.  Usually, species within the same genus are bred together during such experiments.  Canaries and Siskins, however, are not all that closely related, and are not even classified within the same genus. 

What About Color-Enhancing Foods?

Although natural foods containing carotene and commercial Color-Enhancing Diets can brighten the reds and oranges in Canary plumage, genes put the color there in the first place.  The same principle applies to other species as well – early on while working at the Bronx Zoo I learned that if I did not mix enough whole red shrimps into the Chilean Flamingo food, the birds took on a “bleached-out” appearance very quickly – which angered the zoo’s director, who had collected the birds himself!

Fertility Problems

Originally, male Siskins were mated to female Canaries, and the chicks exhibited characteristics of each.  These hybrids were then bred back to Canaries, and eventually a bird that looked just like a Canary, but sported the gorgeous plumage of the Siskin, was developed – and thus we came to have Red Factor Canaries.  The male offspring of a Siskin/Canary cross are only partially fertile, and females are usually infertile.

Fertility among Red Factor Canaries is still not high; breeders usually find it necessary to utilize pure Red Hooded Siskins as breeding stock from time to time.

In Part II we’ll take a look at Siskin care and natural history. 

Further Reading

Hobbyists interested in Siskin breeding and conservation can join the AFA’s Black Hooded Red Siskin Project.

Please see my article on Canary Types for more on other interesting Canary strains.

A video showing a colony of breeding Siskins is posted here.

Spring is an exciting time for those of us who keep birds as pets and observe them outdoors.  In the past I’ve written articles dealing with special concerns and opportunities that arrive with the spring…I’d like to summarize them here, and add a few new thoughts. Read More »