10 June 2013

KG and JB have developed into beautiful juveniles and are soon approaching their first flight, also known as fledging. The normal fledging time ranges between 8 - 10 weeks, sometimes as early as 6 weeks, and as of today KG is 42 days old and JB is 41 days old.

As their first flight time nears, both birds will increase their wing flapping which causes them to become stronger. They may also be observed jumping up and down until a gust of wind will carry them off the nest beginning their first flight. Jasper and Bea will not teach KG and JB to fly, they will fly instinctively.

It's important for KG and JB to fly as much as possible after fledging as they all will make their Central or South America trip alone, provided they do migrate. As mentioned in previous posts, Hilton Head does have some osprey year round, though since we do not band ospreys on our communications tower we are not sure if any of these yearly osprey are from our nest.

From the photos it appears that KG is female (1st photo) and JB being male (2nd photo). The "necklace" on KG is quite prominent, but not always a good indicator of a juvenile osprey's sex. Chicks can start out with a necklace, but lose it as they mature. The better indicator will be its size (3rd photo). Females average about 15–20% larger in body mass than males, and 5–10% longer in wing, tail, claw, and bill length. In addition, females tend to have fuller, darker breast-bands and darker heads than males.

I added photos to the gallery. Check them out!




6 comments:

Anonymous said...

After the baby osprey fledge will they come back to the nest to get fed and to sleep at night...or will the parents leave them on their own to fend for themselves....gosh I hope Jasper and Bev don't leave them until they are sure they will be OK on their own. Goodness if it's not my kids I worry about I now have these two little darlings to also worry about. Another thing...do Jasper and Bea sleep in the nest at night with the chicks.

The two B's

moderator said...

Yes, KG and JB will come back to the nest after fledging and continue to have fish brought to them as well as sleep. It can take juveniles a couple of weeks to become skilled at catching their own fish. Some juveniles learn to fish within a few days.

Bea may stay on the nest or as Jasper she may stay on one of the communications antennae or a nearby tree.

Anonymous said...

I would just like to thank the moderator for the wonderful job he/she has done for all of us...the photo gallery is just outstanding as well as the wealth of information she/he has shared with us. You are truly a lover of nature and I thank you for your dedication.

The two B's

moderator said...

To the Two B's:

Thank you very much!! Thanks for participating in our blog and enjoying our resident ospreys!!!

Anonymous said...

I agree with the Two B's...thank you for all the great photos and excellent information...we appreciate you! R

moderator said...

Thank you R!