Posts Tagged ‘Red crowned cranes’

Avian Enrichment: Red-Crowned Cranes Dance

Posted by in Birds,Enrichment,Everyday Enrichment

Everyday Enrichment: Making Life More Interesting for our Avian Residents – Part VI 

On a daily basis, our keepers strive to provide the wide variety of scenarios that a natural environment would provide our animals. We can provide a variety of options for our animals to work to obtain their food, provide different options for housing or even just give them new stimuli to investigate and explore. However, sometimes the best attempts of an animal keeper are still no match for the variety provided by the natural world.

These are our Red-Crowned Cranes (Grus japonensis) taking the time to “dance.” These elaborate courtship displays are crucial to the development of pair bonding; these behaviors are so ingrained into the development of the birds that chicks will often begin dancing while they are still in the nest. There are few behaviors in the zoo that are as awe-inspiring as the displays of these birds, which can last for extended periods of time. Naturally, many guests are not satisfied with merely seeing video footage of this behavior and ask keepers when would be the best time to see this beautiful spectacle in person. The short answer is this: these birds like it cold. 

These birds would naturally occur in a range that includes countries such as Russia, China and Japan. These birds are used to fairly cold temperature, and here at the zoo a day that starts off particularly cold is a pretty good indication that our Red-Crowned Cranes will be dancing. Birds are wondrous masters of recognizing the natural cues of the world to understand when is the ideal time to attempt to raise offspring; if Red-Crowned Cranes begin their pair-bonding rituals at the end of winter, they will be able to raise their chicks with the abundance of food that is associated with spring. Not only are birds able to take temperature clues, but rainfall and periods of daylight are also used to gauge the time of year. 

Obviously, it is far simpler to take advantage of these natural occurring instances than to attempt to replicate them through artificial means. The overall goal of enrichment is to encourage responses that would also be seen in the wild due to natural stimuli: sometimes it is best to just let the natural stimuli do the work of providing variety for our animals. It is for this reason that we encourage guests to take advantage of a wide variety of opportunities throughout the year to visit our extensive animal collection.

Like this blog? Check out Part I, Part II, Part III, Part IV and Part V!

Keeping the Birds Warm at the Houston Zoo

Posted by in Birds

When the weather outside is frightful, the Houston Zoo Bird Department is so delightful!  Of course, you already knew that, right? 

With wintry conditions barreling across Houston last week, the birds at the Houston Zoo were prepared for the frosty air, thanks to some hard work and foresight from staff.

 In the fall, far before our humid city shakes off the last shackles of summer, the bird department begins preparing the outside exhibits for colder weather.  We gather and hang heat lamps, which cast an eerie red glow, make sure all the heaters are in working order, and begin to put up ‘winterizing’. 

The red glow of heat lamps in our Birds of the World exhibit

  We have heavy duty plastic sheets, specifically fitted and designed to act as a covering for our off-exhibit enclosures.  These serve to keep the heat in and the cold wind and rain out.  As Houston weather can vary from one end of the thermometer to the other in a matter of mere minutes, this covering can fully, or only partially extend over the enclosures, according to need.

Winterizing encasing our Off Exhibit Facility

Our hornbill exhibit, all wrapped up against the cold!

The on exhibit birds are outfitted with windbreaks and heat lamps and each exhibit also has a night shelter, which provides extra protection from the elements. On rare occasion, we will bring a bird inside when needed, but our winterizing is usually more than sufficient.  In some cases, the cold weather makes the birds more active. There’s nothing more magical than watching our pair of Red-crowned Cranes  frolic in fresh snow! 

 We hope you kept yourself warm and safe during the freeze last week, just like the pampered animals at the Houston Zoo!

More Chicks at the Houston Zoo: Red Crowned Cranes

Posted by in Birds

On the 23rd and 24th of April, 2010, the Houston Zoo was proud to greet two new Red Crowned Cranes that hatched to our pair in the Houston Bird Department-Birds of the World!

Red Crowned Cranes (Grus japonensis) is found in Eastern Asia in the countries of Russia, Mongolia, Japan, China as well as North and South Korea.  There are only about 1500 left in the wild making it the second rarest crane species.  These low numbers are due to the destruction of their marsh lands for rice paddies and the expansion of cities.

The cranes use these wetlands and swamps for finding food for their young.  Red Crowned Cranes will eat mostly small amphibians, mammals, invertebrates and insects as well as plants that grow in these marshes.  Red Crowned Cranes typically lay two eggs per clutch.  The incubation period is between 29-34 days and is done by both sexes.  The chicks will fledge after ninety-five days.

Our adult red crowned crane and it's chick

With Red Crowned Cranes it is very common to have early sibling rivalry where the siblings will try to exert their dominance over each other.  In captivity we try to make sure this does not escalate into injury by feeding the chick in two separate sides of their exhibit.  Red Crowned Crane parents are very good at separating their chicks during feedings where one chick will follow each parent.

Our chicks received soaked and chopped Mazuri Crane Diet (which consists of various grains and fish meal) as well as greens, pinkie mice and insects.  We fed them in a shallow pan while tossing crickets and meal worms to opposite sides of their exhibit. 

Lunch!

The parents will catch the insect and hold them out to their chicks, showing them what food to eat.  As they got older we fed them dry Mazuri Crane Diet just like their parents eat.

When the chicks hatched they were a light cinnamon color and very fluffy.  At about four months old they are almost as large as their parents. 

Fuzzy little Red Crownded Crane chick

The have lost most of the fluffiness to their new feather coat and are starting to turn lighter in color.   During the chicks second year they will get their adult plumage turning snow white with a jet-black tail.  At three to four years old they will be sexually mature to start the process over again.

Written by Josh Vandenberg