Join for FREE
It only takes a minute!

Welcome to BirdForum.
BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE! You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply
 
Thread Tools Rating: Thread Rating: 8 votes, 5.00 average.
Old Sunday 20th June 2004, 05:56   #1
kinte
Registered User

 
Join Date: Jun 2004
Location: Savannah, GA
Posts: 4
Male or Female Blue Jay?!

Is there a visual way to tell the difference between a male and female blue jay?
kinte is offline  
Reply With Quote
Old Sunday 20th June 2004, 07:21   #2
Rasmus Boegh
BF member
 
Rasmus Boegh's Avatar

 
Join Date: Mar 2003
Location: right next door
Posts: 3,812
Normally it isn't possible to tell the female from the male Blue Jay just by the looks of it. Can't remember if there's a minute difference in average size, though.
Rasmus Boegh is offline  
Reply With Quote
BF Supporter 2008
Click here to Support BirdForum
Old Sunday 20th June 2004, 13:49   #3
Michael Frankis
conehead
 
Michael Frankis's Avatar

 
Join Date: Apr 2003
Location: .
Posts: 6,794
Hi Kinte,

Welcome to BirdForum!

A behavioural difference: generally, only the female incubates the eggs (males have been known to do a spell, but only rarely). So if you see one incubating, it is likely a female, if you see one carrying food to a sitting bird, that's the male. But both parents feed the chicks, so once they've hatched the eggs, no way of telling.

Michael
Michael Frankis is offline  
Reply With Quote
Old Sunday 20th June 2004, 14:13   #4
kinte
Registered User

 
Join Date: Jun 2004
Location: Savannah, GA
Posts: 4
Well we have a a baby Blue Jay that we are in the process of rehablilitating, is there a way we can tell if it is male of female?
kinte is offline  
Reply With Quote
Old Sunday 20th June 2004, 14:29   #5
Michael Frankis
conehead
 
Michael Frankis's Avatar

 
Join Date: Apr 2003
Location: .
Posts: 6,794
Probably not now - a licensed bird bander would be able to tell in spring, when it will show a cloacal protuberance (male) or not (female)

Michael
Michael Frankis is offline  
Reply With Quote
Old Sunday 20th June 2004, 14:38   #6
kinte
Registered User

 
Join Date: Jun 2004
Location: Savannah, GA
Posts: 4
Quote:
Originally Posted by Michael Frankis
Probably not now - a licensed bird bander would be able to tell in spring, when it will show a cloacal protuberance (male) or not (female)

Michael
sorry im new at this "cloacal protuberance" ?
kinte is offline  
Reply With Quote
Old Sunday 20th June 2004, 14:42   #7
Michael Frankis
conehead
 
Michael Frankis's Avatar

 
Join Date: Apr 2003
Location: .
Posts: 6,794
Sorry - it is something that birds have in the spring, for transferring sperm from male to female . . . not quite the same as what mammals have, but the same function

It is something that can only be seen by examining the bird in the hand (by gently blowing the feathers apart under the tail, to see the skin) - which is why only a trained & licensed bird bander can do it

Michael
Michael Frankis is offline  
Reply With Quote
Old Sunday 20th June 2004, 14:44   #8
kinte
Registered User

 
Join Date: Jun 2004
Location: Savannah, GA
Posts: 4
i figured is was something like that but i wasnt sure, thanks
kinte is offline  
Reply With Quote
Old Sunday 20th June 2004, 17:32   #9
Bluetail
Senior Moment

 
Join Date: Oct 2003
Location: Plymouth, Devon
Posts: 6,409
Quote:
Originally Posted by Michael Frankis
A behavioural difference: generally, only the female incubates the eggs (males have been known to do a spell, but only rarely). So if you see one incubating, it is likely a female, if you see one carrying food to a sitting bird, that's the male. But both parents feed the chicks, so once they've hatched the eggs, no way of telling.
Hi, Michael

Did you just know that, or have you got a reference book? If so, which one? - it sounds worth getting.
__________________
Jason
Come doleful owl, the messenger of woe,
Melancholy's bird, companion of Despair,
Sorrow's best friend and Mirth's professed foe
The chief discourser that delights sad Care.
O come, poor owl, and tell thy woes to me.
Which having heard, I'll do the like for thee.

(Anon c.1607)
Bluetail is offline  
Reply With Quote
BF Supporter 2004
Click here to Support BirdForum
Old Sunday 20th June 2004, 18:47   #10
Michael Frankis
conehead
 
Michael Frankis's Avatar

 
Join Date: Apr 2003
Location: .
Posts: 6,794
Quote:
Originally Posted by Bluetail
Hi, Michael

Did you just know that, or have you got a reference book? If so, which one? - it sounds worth getting.
Hi Jason,

From Crows & Jays (Madge & Burn, Helm 1993)

Michael
Michael Frankis is offline  
Reply With Quote
Advertisement
Reply


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Index for ID Q&A Jane Turner Bird Identification Q&A 113 Monday 26th December 2011 16:15
Eurasian Robins, male v female Zulu Merula Bird Identification Q&A 5 Friday 23rd April 2004 20:28
Common Redpoll: but is it male or female? el_supremo Bird Identification Q&A 8 Friday 12th March 2004 15:27

{googleads}

Fatbirder's Top 1000 Birding Websites

Help support BirdForum

Page generated in 0.12809491 seconds with 19 queries
All times are GMT. The time now is 03:28.