Beemaster's International Beekeeping Forum

BEEKEEPING LEARNING CENTER => GENERAL BEEKEEPING - MAIN POSTING FORUM. => Topic started by: Moots on April 02, 2013, 06:23:17 pm

Title: Bees and depth perception???
Post by: Moots on April 02, 2013, 06:23:17 pm
This is one of those cases where a picture may be worth a thousand words...but I'll try to explain.

My hive stand is made of a 1X8 frame placed on cinder blocks and is painted white...My bottom boards sit atop it and happen to be painted the same color.  I've noticed a number of bees coming in for a landing seem to undershoot the landing board and it the hive stand board right below it.  I've wonder if I had painted my hive stand or landing boards a contrasting darker color if it would have helped the gals out?

As an experiment I added a plain piece of unpainted wood to the end of the landing boards last night just to see if I notice a difference.

Has anyone else observed this, or have any theory on my observations....
Title: Re: Bees and depth perception???
Post by: D Coates on April 02, 2013, 06:27:56 pm
I've seen what your talking about.  I've always assumed it meant they're tired and or have a heavy load.  If they had poor depth perception they wouldn't last long in nature.
Title: Re: Bees and depth perception???
Post by: dfizer on April 02, 2013, 07:30:08 pm
The only time I observe the wonky landing is when there's some wind... 
Is it windy where you are?
David
Title: Re: Bees and depth perception???
Post by: Moots on April 02, 2013, 07:35:23 pm
I've seen what your talking about.  I've always assumed it meant they're tired and or have a heavy load.  If they had poor depth perception they wouldn't last long in nature.

D,
Good point...

In reference to the "heavy load" observation, I've seen that as well, it cracks me up.  Told my little nephew it reminds me of a fully loaded Chinook coming in for a landing, they're all over the place.

dfizer,
As to the wind...I don't think that's the case here.  We get some pretty good breezes at times, but I want to say I've seen this when it's dead calm. 
Title: Re: Bees and depth perception???
Post by: 123_Bee on April 02, 2013, 08:15:39 pm
Could it be colour perception?

If the stand and the bottom board are the same colour, maybe the bees are aiming for the edge of the white area where there's a contrast - same as focusing a camera?
Title: Re: Bees and depth perception???
Post by: fshrgy99 on April 02, 2013, 08:32:18 pm
I have been thinking that the bees have a hard time seeing anything white. Last summer we had a stretch of 100+ degrees and I had put an old beach umbrella up to increase the shade. It had a blue perimeter band and a white yoke in the center that overlapped and provided air flow. The bees would land on the blue part. When they happened to crawl under the white yoke they would take off, fly straight into it and fall back down 2" onto the blue fabric about 5 times a second. Since then I've thought of myself as kind of invisible if I'm in a white suit.

Just a thought
Title: Re: Bees and depth perception???
Post by: Moots on April 02, 2013, 08:39:02 pm
Could it be colour perception?

If the stand and the bottom board are the same colour, maybe the bees are aiming for the edge of the white area where there's a contrast - same as focusing a camera?

123_Bee,
I think that's really what I was getting at....

and to fshrgy99 point about the color white...Maybe it's the two factors giving the trouble.  The fact that the bottom board and stand are both the same color.  And the fact that that color in my case happens to be white!

Title: Re: Bees and depth perception???
Post by: schawee on April 02, 2013, 10:15:20 pm
I think some landing lights will help them out  :-D  just kidding
Title: Re: Bees and depth perception???
Post by: Moots on April 02, 2013, 10:24:36 pm
I think some landing lights will help them out  :-D  just kidding

:lau: :lau: Nice Schawee, very nice! :laugh:

I was thinking about maybe installing a crosswalk and traffic signal.   :-D
Title: Re: Bees and depth perception???
Post by: rbinhood on April 02, 2013, 10:51:57 pm
Place a strip of yellow and black reflective tape on you hive stand below the hive.  Now they should understand that they should avoid this area.   :lau:
Title: Re: Bees and depth perception???
Post by: BeeMaster2 on April 02, 2013, 11:00:58 pm
Moots,
My bees have to come in on a very steep angle through an opening in the trees. They are traveling at a very high rate of speed. If you stand in the way they plow into you because they are used to having a clear shot and usually don't slow down until the last second. With a heavy load I think they are just missing the landing board. Are you standing in front of the hive when they are missing the landing board?
Jim
Title: Re: Bees and depth perception???
Post by: Georgia Boy on April 02, 2013, 11:17:39 pm
Hey Moots,

I agree with you, its an optical illusion. Since both are white if you come in at just the right angle there is no visual separation between the two. It kinda like traveling on a straight hilly road at the right angle you can't tell that there is a dip between two hill tops it looks like the road is flat.

On the other hand the landing light sounds like a good idea to me. Couldn't hurt. :)

David. 
Title: Re: Bees and depth perception???
Post by: PLAN-B on April 02, 2013, 11:59:59 pm
Moots it's one to one--- that's one part sugar to one part water (H2O) not one part moonshine... :-D Just kidding. I agree, maybe they are being white washed... Break up the pattern... White on a sunny day makes me squint too... 8-) they need sunglasses... Haha
Title: Re: Bees and depth perception???
Post by: Moots on April 03, 2013, 12:10:28 am
Moots it's one to one--- that's one part sugar to one part water (H2O) not one part moonshine... :-D Just kidding. I agree, maybe they are being white washed... Break up the pattern... White on a sunny day makes me squint too... 8-) they need sunglasses... Haha

B,
Sunglasses....not a bad idea.  :-D

If anyone knows where I can get a good price on about 50,000 itsy-bitsy, teenie-weenie pairs of sunglasses....let me know!  I'm interested! :laugh:  Anything for the gals!  :-D
Title: Re: Bees and depth perception???
Post by: schawee on April 03, 2013, 01:16:04 am
I just ordered 20000000 pairs and will have a sale on the used ones im replacing. :-D
Title: Re: Bees and depth perception???
Post by: fshrgy99 on April 03, 2013, 07:57:08 am
compound john lennon sunglasses
Title: Re: Bees and depth perception???
Post by: Simon on April 03, 2013, 07:58:55 am
Beekeepers here always recommend putting the front cleat on the bottom board right at the front under the "landing step".  If you don't, many of the bees will fly under the bottom board.  Maybe they are coming in heavy and undershoot their landings, but I also suspect that they get confused as to where the entrance is - i.e mistake the dark area under the landing board as the hive entance.  We used to put a few bricks right at the front of the hive to make the landing area bigger.
Title: Re: Bees and depth perception???
Post by: Moots on April 03, 2013, 10:08:50 am
Beekeepers here always recommend putting the front cleat on the bottom board right at the front under the "landing step".  If you don't, many of the bees will fly under the bottom board.  Maybe they are coming in heavy and undershoot their landings, but I also suspect that they get confused as to where the entrance is - i.e mistake the dark area under the landing board as the hive entance.  We used to put a few bricks right at the front of the hive to make the landing area bigger.

Simon,
I think what you're saying, is what I'm seeing.... :)

I'm just having a hard time visualizing the recommended fix....any chance you can come up with a photo?

Thanks!
Title: Re: Bees and depth perception???
Post by: nietssemaj on April 03, 2013, 02:59:00 pm
What I always find hilarious is the heavy bee coming in getting plastered by a bee shooting out.

I think my bee's need an air traffic controller sometimes.
Title: Re: Bees and depth perception???
Post by: Simon on April 04, 2013, 03:31:00 am
Hey Moots, I just took a couple of photos for you.  The quality is a bit average due to my cheap phone, but I think that you will get the idea.

In photo A of my really old bottom board, there is a gap under where the bees land.  Bees will quite often fly into the space under the pailing floor as the cleat is set back from the very front of the bottom board.

(http://s4.postimg.org/labse24l5/IMG_A.jpg) (http://postimg.org/image/labse24l5/)

In photo B, the cleat is right at the front.  There is more landing area (vertical and horizontal surface) and the bees seem to have less trouble.  I have seen plans for a hive stand with a sloping "alighting" board at the front which gives even more area for the bees to aim at.  The Michigan Beekeepers Association have a plan for one of these on their web site called hive-stand_20110330.pdf  that you should be able to find without too much trouble.

(http://s22.postimg.org/nhx92786l/IMG_B.jpg) (http://postimg.org/image/nhx92786l/)

We don't have skunks or bears in Tasmania, so hives are often sat on a few concrete blocks or bricks rather than a higher dedicated stand.  Sometimes a couple extra house bricks can be placed in front of the bottom board to take the place of the purpose built hive stand like in the plan - keeps the grass back a bit as well.  That works well if you only have a small number of hives.  I have seen some people use a short piece of plank or ply wood to act as a makeshift landing ramp too.  I have tried to demonstrate both these ideas in photo C (substituting wooden blocks for bricks in this case, but the light wooden blocks probablty wouldn't be heavy enough to stay put for long).  A couple of tacks through the ply into the bottom board would be a good idea too.

(http://s15.postimg.org/lwxgs9sw7/IMG_C.jpg) (http://postimg.org/image/lwxgs9sw7/)


I haven't tested to see if the bees get less lost if the hive is a colour other than white.  I'll ask around , it would be interesting to know if a darker colour helps with their landing approach.
 
Simon
Title: Re: Bees and depth perception???
Post by: Moots on April 04, 2013, 10:32:40 am
Simon,
Now I'm following what you're saying....thanks so much for taking the time to take the photos and explain.  :)

I've been busy and we've had a couple days of rainy/ugly weather...So I really hadn't had much of a chance to observe if my modification is having much affect.  I'll post a followup later....
Title: Re: Bees and depth perception???
Post by: 123_Bee on April 07, 2013, 08:37:06 pm
I have seen some people use a short piece of plank or ply wood to act as a makeshift landing ramp too.  I have tried to demonstrate both these ideas in photo C (substituting wooden blocks for bricks in this case, but the light wooden blocks probablty wouldn't be heavy enough to stay put for long).  A couple of tacks through the ply into the bottom board would be a good idea too.

(I haven't made enough posts for forum software to let me link your image)

I haven't tested to see if the bees get less lost if the hive is a colour other than white.  I'll ask around , it would be interesting to know if a darker colour helps with their landing approach.

I use ply landing boards, each one has a different pattern painted on it. I used left over paint, so nothing fancy. One has a stripe leading up to the entrance, another has four dots on it .. and so on. The landing board stays with the colony.
Title: Re: Bees and depth perception???
Post by: Simon on April 08, 2013, 08:55:22 pm
123_Bee, I reckon that it's pretty good thinking painting your landing boards with different patterns etc.

I watched a video a while ago (Youtube I think) about bumble bee hives and the guy presenting had added a white front to his hives with a yellow circle or square painted around the entrances.  He said the contrasting entrances helped the bumble bee queens to find their way in.  There must be something to his suggestions at least with bumble bees as he seemed to have a fair bit of success getting bumble bees to move in to his hives.

I expect that bumble bee sight is pretty similar to that of honey bees so I'm now thinking of adding some yellow paint to some swarm traps too.  Thanks for the hint.  :)
Title: Re: Bees and depth perception???
Post by: 123_Bee on April 10, 2013, 07:42:58 pm
I did think of painting the entrances, or a pattern near the entrances, then realised giving clean boxes in the spring with different patterns could confuse them, more especially if I a colony's old box was cleaned out and re-used within the same apiary (bee yard?).

So all my boxes are the same, the patterned landing board stays with the colony.

There was research about how bees see colours, but I can't recall who did it.