Category Archives: Behaviour

New Dragonfly & New Moth at Tillman Road

A last-minute change of plans took us back to our old stamping ground in Western New York State at the weekend, so I grabbed a couple of hours to re-visit the Tillman Road Wildlife Management Area, at Clarence.  The WMA is described by the NYS DEC as “a wet lowland with an emergent marsh, open water, grassy fields, a deciduous swamp and hardwood forest.”

A male Carolina Saddlebags dragonfly
A male Carolina Saddlebags dragonfly

Tillman’s greatest appeal to me, over the last 12-or-so years that I have been a regular visitor, is that one never knows quite what will be found on any visit and ‘drawing a blank’ is rare.

Carolina Saddlebags, rear view to show wing detail
Carolina Saddlebags, rear view to show wing detail

This time, I turned up two new insect species I had never before  seen or photographed:  a male Carolina Saddlebags dragonfly  (Tramea Carolina), and what – to the best of my very limited ability with moths – I believe to be a White Spring moth (Lomographa vestaliata).  The latter sat motionless on a leaf, to the extent that I wrongly presumed that it would be some sort of ‘bird dropping moth’ but the former was on high-speed patrol along the margin of a pond and settled only briefly, each time, before doing another lap of its territory.

I believe this to be a White Spring moth
I believe this to be a White Spring moth

I’ve been very careful in identifying the dragonfly because it is very similar, in both appearance and range, to the Red Saddlebags (T. onusta) but I’m fairly confident I’ve got it right… However, as is always the case on my blogs, if anyone recognizes that I’ve made a mistake please do add a    comment below to put me right, and I will correct any error.

The various species of ‘saddlebags’ dragonflies get their name from the dark patches on the inner section of their wings, and when seen – usually in silhouette – from below, this creates an outline that looks like what the name says.

A Red Admiral butterfly, laying an egg
A Red Admiral butterfly, laying an egg

Up where we were, close to Lake Ontario, the Carolina is fairly close to the northern limit of its range, which is over the border in southern Ontario province. Even in this part of New York State, it is further north than its usual breeding range.

Common Blue Violet (Viola sororia)
Common Blue Violet (Viola sororia)

 

My other insect of the day was a rather worn-looking Red Admiral butterfly (Vanessa atlanta) which – to my surprise – was laying eggs in low, rough vegetation where I could see no trace of any of the future caterpillars’ necessary food plants.  Does a first-brood adult lay eggs randomly around an area in the hope that at least some of their offspring will find suitable food after the plants all grow?  Or was this one operating by smell (chemical sensing) and by that means actually knew the right places to leave eggs?

Tree Swallow
Tree Swallow

As for the other photographs, well I’m always a sucker for violets and I’m not going to walk past a ‘posing’ Tree Swallow, either!

A Mixed Bag of Birds at Five Rivers

On the same walk I wrote about in ‘Honey Bees, Bumble Bees and Wannabees‘, I grabbed a few photos of birds that conveniuently appeared nearby.  I don’t think there’s anything that needs adding in terms of a ‘story’ here, so this is just a small selection of the resultant images:

Nesting territory dispute - Canada Geese
Nesting territory dispute – Canada Geese

 

Northern Roughwing Swallow (Stelgidopterix serripennis)
Northern Roughwing Swallow (Stelgidopterix serripennis)

 

Territorial dispute - Canada Geese
Tree Swallows (Tachicineta bicolor) staking their claim to a nestbox

 

An American Robin, nothing much like the Eurasian Robin from which, presumably, a homesick immigrant gave this ginger-breasted species of thrush its hand-me-down name.
An American Robin, nothing much like the Eurasian Robin from which – presumably – a homesick immigrant gave this ginger-breasted species of thrush its hand-me-down name.

 

Song Sparrow (Melospiza melodia)
Song Sparrow (Melospiza melodia)

 

 

Honey Bees, Bumblebees and Wannabees!

[Another visit to the NYSDEC preserve at the Five Rivers Environmental Education Center at the end of April proved to be an excellent opportunity for watching pollinating insects at work.

The male catkins on a stately old willow tree at Five Rivers
The male catkins on a stately old willow tree at Five Rivers

All of this needs to be considered in light of the fact that there are now major threats facing the survival of bees, worldwide, and heaven help mankind if bees are decimated to the point that crop pollination is badly affected.

How much more pollen can this Honey Bee carry?
How much more pollen can this Honey Bee carry?

 

From what I saw, there were apparently two species of bumble bee and one species of honey bee present at the various blossoming willow trees on the Five Rivers’ Beaver Tree Trail but it turns out that individual bumble bee species are very difficult to identify from one another.     I learned this after buying an excellent book some months ago, under the title of Bumble Bees of North America (Princeton University Press).  In the book, it describes the need to study leg joints and other tiny parts of the anatomy, but as I have enough to do in terms of photographing wildlife and I’m also extremely disinclined to kill something I’ve just enjoyed photographing, merely so I could study its leg joints, this is not something I would do.

The colouration on the thorax of this Bumble Bee was a much darker yellow than it was on what I believe to be the 'other' species present
The colouration on the thorax of this Bumble Bee was a much darker yellow than it was on what I believe to be the ‘other’ species present

Having said that, I did take the liberty of sending a couple of my photographs via Twitter to the Xerces Society,  (@xerces_society) an organisation that protects wildlife through the conservation of invertebrates and their habitat, to see if they could help me with identification.  Note that the name is not spelled ‘Xerxes’ and they have nothing to do with 300 Spartan warriors!  The Xerces people kindly referred me to a group called Bumble Bee Watch (@BumbleBeeWatch) and I’m hoping they might be able to help enlighten me.

And here, a lighter-coloured individual

Apart from the bees that were present there were also a few Snowberry Clearwing Hawk Moths (Hemaris diffinis).  As their name shows, these rather dramatic and perfectly harmless insects have clear, see-through wings,  not the coloured wings that we normally expect of moths.  The reason is that their body colouration has been designed by evolution to mimic bumble bees! This gives these otherwise defenceless moths a degree of protection from predators that might otherwise eat them.

On previous visits to Five Rivers – and, indeed, on the same Beaver Tree Trail – I have previously photographed a very close cousin of the remarkable Snowberry Clearwing, the Hummingbird Clearwing Moth (Hemaris thysbe) and for both of these species the final surprise for anyone watching them is that they feed by hovering above their chosen flowers, while feeding on the nectar through a very long proboscis.  Think of it as like drinking through the equivalent of a ten-foot drinking straw!

A Snowberry Clearwing Hawk Moth (its wings are blurred because they are beating so quickly)
A Snowberry Clearwing Hawk Moth (its wings are blurred because they are beating so quickly as it hovers)

Anyway, this day’s Snowberry Clearwings were a new species for me, but they weren’t the only one.  In among the bees and the clearwing moths were also a few bombylid flies.  According to my books, they looked most like the species known as Black-tailed Bee Flies (Bombylius major)  but as I didn’t actually see any black tails in among them I must assume that they might have been a different but closely related species.  They, too, usually hover over flowers while feeding although that’s not the case in the photograph below.  However, the larvae of the many species of bee fly either prey upon or parasitise the larvae of other insects, including bees.

Either a Black-tailed Bee Flies (Bombylius major) or a closely related species
Either a Black-tailed Bee Flies (Bombylius major) or a closely related species

Also feeding from the male catkins on the wonderful but very elderly willow tree that had triggered this insect feeding frenzy were Mourning Cloak and various white butterflies.

All in all, I spent well over an hour under that willow tree, frankly delighted by the amazing display of its flowers and by the wealth of insect life it had attracted.  The air, quite literally, was abuzz with their sounds and as the pesky mosquitos have not yet appeared for the summer, it was uninterrupted enjoyment.

Want to see a wonderful wildlife spectacle in spring?  Go and stand under a mature, flowering willow tree!  There’s probably one not too far from you, particularly on the edge of water courses or other wetlands.

[LINKS here to other topics photographed on the same walk / same day, namely Birds, and Amphibians.]

Eddie