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07-22-2021, 06:47 PM - 1 Like   #36556
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QuoteOriginally posted by Mbaez Quote
Wow, how does that happen?
Yes, it's a brood parasite behavior of the Cuckoo birds, using a sneaky strategy to raise its young.


QuoteOriginally posted by swip Quote
Great series documenting the parasitic practice of some bird species.
Thank you.

07-22-2021, 09:02 PM   #36557
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QuoteOriginally posted by Pentaxians Quote
A perfect mismatch family that I always wanted to capture it naturally. Last week, I finally recorded it down on my camera. A Banded Bay Cuckoo being fed by it's foster parent, a male Common Iora. Totally a perfect mismatch with one species feeding another totally non-related species.
Look at the mouth of the juvenile cuckoo, looks really scary with a mouth big enough to swallow its parent whole
What a great series! And I can imagine your delight at being able to witness it live, let alone photograph it. I am an avid watcher of nature documentaries, so knew about this sort of thing - but to see it live?
07-23-2021, 01:50 AM   #36558
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QuoteOriginally posted by K2 to K50 Quote
What a great series! And I can imagine your delight at being able to witness it live, let alone photograph it. I am an avid watcher of nature documentaries, so knew about this sort of thing - but to see it live?
Sometimes it really depend on luck, to be witness and photographed at the same-times. One thing that I notice, the juvenile will keep calling for the feeding, can watch out for this.
07-23-2021, 03:28 AM   #36559
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QuoteOriginally posted by K2 to K50 Quote
Pretty good, especially considering your were using a 2x TC.
You need to consider the lens system here, in. Total.
The sigma 2x Tc is not like an ordinary TC, it is only designed to be used on a very limited number of lenses made by sigma. Specifically long and fast tele and tele-zoom lenses such as

70-200/2.8
300/2.8
500/4.5
Etc.

Sigma uses a design similar to the Pentax L rear converter where the front element of the TC protrudes forward into the lens it is connected to.

As a result, unless the lens barrel has a minimum of 35 mm in internal diameter and the rear elements are recessed about 15 mm or more from the mount, it simply won’t fit .

There have been published lists of the lenses the TC will work with, and since it shares some design features in common with Pentax it obviously will also work on the similar range of Pentax F and FA fast tele lenses.

The sigma lens I am using is a screw drive lens, and was produced before the advent of the sigma DG (full frame digital) series lenses, although except for the coatings is optically the same as the very first APO 70-200/2.8 EX DG lens. The screw drive Macro version was reportedly softer at the long end, as were several of the HSM versions. It has served me well for over 20 years.

07-23-2021, 05:05 AM   #36560
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QuoteOriginally posted by Lowell Goudge Quote
Water looked pretty flat too. Nice series
Thanks Lowell - look forward to seeing you again there sometime.
6 Days Ago - 4 Likes   #36561
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QuoteOriginally posted by Pentaxians Quote
Yes, it's a brood parasite behavior of the Cuckoo birds, using a sneaky strategy to raise its young.

Thank you.
QuoteOriginally posted by Pentaxians Quote
Sometimes it really depend on luck, to be witness and photographed at the same-times. One thing that I notice, the juvenile will keep calling for the feeding, can watch out for this.
A few years ago I had a nest of Carolina Wrens and someone mentioned that one of the birds in the nest was not a wren but a cowbird (based on a bright red throat). Brown-headed Cowbirds have a similar behavior and will lay a single egg in another bird's nest. I happened to have my camera at my son's house and saw a sparrow feeding a juvenile cowbird and got a few shots including these.



6 Days Ago - 5 Likes   #36562
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The old dog still knows itís tricks

The summer season is here at my usual park, so not much changes day to day. I decided to leave my K1 and DA560 at home and take something lighter

This is about the lightest 500 mm AF possible. (Ok I could use the M series version and save a few grams) the K300/4 coupled to the SMF-F 1.7x AF converter = 500mm F6.7 weighing in at 1155 grams

This is about 1/2 the K5 frame, vertical crop out of the full height of a landscape shot

Edit note it is the later version lens smc PENTAX

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6 Days Ago   #36563
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QuoteOriginally posted by GvilleRick Quote
A few years ago I had a nest of Carolina Wrens and someone mentioned that one of the birds in the nest was not a wren but a cowbird (based on a bright red throat). Brown-headed Cowbirds have a similar behavior and will lay a single egg in another bird's nest. I happened to have my camera at my son's house and saw a sparrow feeding a juvenile cowbird and got a few shots including these.


Nice catch GvilleRick! Thanks for sharing!
6 Days Ago - 7 Likes   #36564
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Just hanging out....and having some fun.

Little Corella.
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5 Days Ago - 6 Likes   #36565
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With DFA 150-450.
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5 Days Ago   #36566
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QuoteOriginally posted by termy Quote
With DFA 150-450.
That's a nice conjunction.
5 Days Ago - 1 Like   #36567
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Another deer shot

Foggy and long way off . . .
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4 Days Ago - 9 Likes   #36568
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squacco heron with DA*300mm F4 and 1.4 TC on KP

---------- Post added 07-25-21 at 08:23 PM ----------

QuoteOriginally posted by WPRESTO Quote
Nice lighting to bring out the texture in its skin. I know the positioned the light source to record that detail
Yes. It took all morning to position that light correctly


QuoteOriginally posted by rod_grant Quote
It looks ready for the nursing home.Head and neck look Very Very old!
This one is actually a youngster. They get less good looking as they age ( really)
4 Days Ago - 5 Likes   #36569
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Boats

4 Days Ago - 10 Likes   #36570
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Royal Spoonbill.
K-3 II, DFA 150-450, handheld. See exif for shot details.

Cheers,
Terry
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