Random header image... Refresh for more!

Why are there spots in these birds’ mouths?

Post co-authored by Aimee OwenGFinch1

The offspring of many finch species, like these Gouldian finch (Chloebia gouldiae) chicks, have luminous nodules, called papillae, on the sides of their beaks and markings on the inside of their mouths. Together, these act as sort of a “beacon” to direct the parents to the hungry mouths of their chicks in dark nest cavities.  Each species of finch has a different arrangement of papillae and mouth markings.  As each chick develops into an adult and begins to eat without parental assistance the papillae and markings gradually disappear.

Gouldian finches are a species of grass finch that inhabit the savannah regions of northern Australia.  Australian seasonal changes range from a dry season lasting about six months to a wet season, which lasts about three months.  These finches feed primarily on grass seeds throughout the year.  However, in the beginning of the dry season when the grasses turn brown and go dormant, an abundance of fallen seeds previously hidden become more available to the birds.  This period of plentiful food directly coincides with and activates the Gouldian finch breeding season.

Wild Gouldian finches breed at the end of the wet season.  The male and female will remain together for an entire season.  The parents lay four to eight eggs in one clutch that will hatch after 14 to 16 days of incubation.  They can lay and raise several clutches in a season, producing up to 20 offspring in that time period.  When the chicks are three weeks old, they will emerge from the nest.  At this time, their feathers are a drab olive green, unlike their colorful parents.  Then after about nine weeks, the bird’s colorful adult feathers will begin to grow.Gfinch2

Gouldian finches though common in captivity, were on the endangered species list from 1992 to 2012. Population numbers of these birds have suffered due to grazing and fire management in their dry grassy habitat but more recently they have been upgraded by the IUCN as a Near Threatened species.  It is believed that there are less than 3,000 individuals left in the wild. This fluctuation demonstrates how their wild population numbers can be very fragile.color_finch

This is why places like the Cincinnati Zoo are so important in our breeding efforts.  These beautiful birds are displayed to raise awareness about their wild cousins.  Here at the zoo our group of finches (the term for a group of finches is called a charm) is a self-sustaining population.  This means they breed, raise young, and maintain steady population numbers without receiving any additional birds from other institutions.

The Cincinnati Zoo staff supply these colorful little birds with nesting materials, such as dry grasses, leaves, and mulch, and they construct their own nests in small secluded baskets that we provide for them.  They lay their eggs inside, keep them warm, then the chicks hatch and are fed by the parents.  On occasion we inspect the nest to ensure the chicks are doing well and are being cared for properly, but the good thing is that mostly the parents do all the work.  After about 3 weeks the chicks emerge fully feathered and ready to join the charm!

Be sure to stop by the Wings of The World bird exhibit here at the Cincinnati Zoo and check out these vibrantly colored birds!

8 comments

1 pierce college district 11 { 02.12.14 at 4:48 am }

I honestly think that this is a very impressive
article you got there. Would it bother you if I share site on my
facebook along with the url and the header of your page:”Why are there spots in these birds’ mouths? “??
I entered your blog while I was browsing for cartilage jewelry and I think that I was extremely fortunate for
doing so.
Thank You,
The Cartilage Piercings Crew

Here is my website pierce college district 11

2 Johnc900 { 04.28.14 at 3:03 am }

Wow that was odd. I just wrote an extremely long comment but after I clicked submit my comment didn’t show up. Grrrr well I’m not writing all that over again. Anyway, just wanted to say superb blog! daeegceaedkd

3 S S { 01.26.15 at 2:22 am }

This is a great post! I saw a picture of these unique birds a while ago and have been trying to find out more about them.

4 ask.fm tutorial { 01.31.15 at 12:41 am }

Thanks for sharing your thoughts about birds.
Regards

5 probolan 50 opinie { 03.02.15 at 12:08 am }

That Probolan 50 knowledge was clearly written by teenagers.
Fair enough? I simply do the basics. Has Probolan 50 ever been the wrong
selection? This is how to rapidly fix Probolan 50 problems.

That thought relevant to Probolan 50 is dead as a doornail.

If that’s you, then this installment will have little
meaning. After a several months of pushing Probolan 50,
children are now finally wising up. That is how to handle worrying in the matter of Probolan 50.
My overall rating for Probolan 50 is high. Here are nine approaches to sneak up on your Probolan 50.
Probolan 50 is an uncommonly used program to deal with Probolan 50.
Fanatics of Probolan 50 aren’t too choosy about any Probolan 50 ideas one has put forward for them.
Probolan 50 is a big mess for me. If you know Probolan 50 you will then be
able to make up for Probolan 50. Without doubt, you wait until you already
have Probolan 50. A Probolan 50 might to all appearances be all
right and yet not have enough Probolan 50. How can common citizens
smoke out great Probolan 50 meetings? Probolan 50 is essential to everybody.
When adepts talk about researching Probolan 50
the concept is to find Probolan 50. If my post has come
across a bit gruff then I sincerely apologize.
I’ve type of wondered why I’ve never been asked as to Probolan 50 before.

You need every Probolan 50 you can get. Allow me mention a couple of things that might make sense
in light of Probolan 50.

Visit Here –> http://health-pl.com/

6 cd { 03.24.15 at 8:18 am }

Infօrmative article, just what I was looking for.

7 Fashion { 04.07.15 at 1:04 am }

Very good info. Lucky me I discovered your
website by chance (stumbleupon). I’ve bookmarked it
for later!

8 daemon tools Free { 05.22.15 at 6:54 pm }

Greetings i am for the primary moment here. I came across
this panel and I see it truly helpful and also it helped me out a
lot. I’m hoping to provide one thing back and help others like you aided me.

At any time drop by our online page… daemon tools Free

Leave a Comment