Egg Production Process - Secrets revealed in Bluebirds 101 - A Beginner's Guide Forum

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Egg Production Process - Secrets revealed

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3luvbugs4me	Egg Production Process - Secrets revealed	Lead	[-]
Posts: 320 Mar 30 08 11:39 AM More My Recent Posts	Tags : None What follows is a thread that was started on the Bluebird Chatter forum, edited to its informational content only. To see the original thread in its entirety, click here. ~Cher~ Forum Admi-nut-strator Do the female blues have all those eggs inside her at the same time?? Last Edited By: BluebirdNut Apr 1 08 2:43 PM. Edited 5 times.
ryt now	I know...........	#1	[-]
Posts: 238 Mar 30 08 1:13 PM More My Recent Posts	Picture a bunch of little grapes as the ovaries, and each day one little grape will brake off and travel down. If she has mated with a male then the egg will fertilize and if not it will just be a plain ole egg..... http://www.learner.org/jnorth/tm/robin/EggstraEggstra.html Last Edited By: BluebirdNut Apr 1 08 2:34 PM. Edited 3 times.
dogsandbirds		#2	[-]
Moderator Posts: 7323 Mar 30 08 6:02 PM Middle Name "Guarded" More My Recent Posts	Can you imagine how the female would look with 4-6 or more full size eggs in there? That's a really funny image! Last Edited By: BluebirdNut Apr 1 08 2:34 PM. Edited 1 times.
bbcathy		#3	[-]
Posts: 1291 Mar 31 08 6:57 AM More My Recent Posts	Well Eileen They do have all 4 or 5 in there at the same time they are just not all full size and have no shell. I have seen this in chickens and the grapes is a good way to describe it. If you can stand the gore here on sialis is a link to a picture of the whole thing. It is of a dissected female hosp. http://www.sialis.org/eggproduction.htm Cathy Last Edited By: BluebirdNut Apr 1 08 2:35 PM. Edited 3 times.
Janie May		#4	[-]
Moderator Posts: 3700 Mar 31 08 10:31 AM Middle name "Baffled" More My Recent Posts	Here is the info. from my friend, Malinda: The female reproductive tract is divided into several parts. It takes approximately 25 hours for an egg to travel from the beginning to the end. The first part of the female reproductive tract is the infundibulum. This consists of a) a funnel which captures the ovulated egg and b) a tubular region known as the chalaziferous region. Sperm fertilizes the egg in the funnel portion of the left oviduct. However, a female will lay eggs even if there has been no mating to fertilize them. The egg then passes on to the chalaziferous region. Here a layer of albumen, known as the chalaziferous layer, and the chalazia which suspend the yolk, are secreted by glands in the tubular region. The egg remains in the 1st part of the reproductive tract for 15 minutes. The second part of the oviduct is the magnum. This is the longest and most coiled portion of the oviduct. It is very thickwalled and contains many tubular glands which secrete albumen, sodium, magnesium and calcium. The egg remains in the magnum for three hours. The isthmus is a short portion of the oviduct. During the 75 minutes the egg remains here, the inner and outer shell membranes which line the shell are formed and calcification is initiated. The uterus or shell gland is the place the egg remains the longest, from 20 - 26 hours. The shell of the egg is secreted here and "plumping" occurs. Plumping is the rapid addition of watery solutions to the egg, which doubles the weight of the albumen. The final part of the female reproductive tract is the vagina. The egg passes through this portion very rapidly as it is laid. Sperm may be stored in specialized glands known as sperm host glands which are located in the vaginal sphincter for a few days. The sperm travel up to the infundibulum to fertilize the egg. Most psittacines (parrots) lay their eggs every two days, while passerines (finches and canaries) and chickens usually lay an egg every 24 hours during their laying cycle. The ovary is under complex hormonal control. In birds that are seasonal egg layers, the left ovary undergoes three phases of development. During the first phase, the prenuptial acceleration, the ovary enlarges. The second phase, the culmination phase, is when ovulation and egg laying occur. The third phase is the refractory period during which the ovary regresses in size until the next time. During the early stages or late stages of egg laying, the infundibulum may fail to catch the ovulated egg and it may enter the abdominal cavity. This is known as "Internal Laying". The egg may be absorbed or it may lead to an inflammatory process known as egg yolk peritonitis Last Edited By: BluebirdNut Apr 1 08 2:37 PM. Edited 2 times.

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