Now cool whitetails

 

I am a hunter — but not the type who shoots to eat; I shoot to admire (and do so with a camera). 

However, if you want to understand some aspects of animal behaviour, you might consider hanging out with those who do shoot to eat. They see and track a great deal. 

Over a week ago, in the midst of the outrageous hot spell (mid to high 30s), I posted a picture of a Steller’s Jay supposedly complaining about the temperature. Karen Pidcock then asked: “How do you think the wild creatures are holding up in this heat?” I didn’t know. 

An internet search revealed that those who shoot to eat believe that deer hide in the shade rather than move about when the temperature is high. Indeed, I saw none during that hot spell. Yet now, with temperatures in the mid 20s, I saw three deer, and a more secretive male was seen twice. So, it seems, the deer are moving again.

A male white-tailed deer looks at me over his shoulder. As his antler development seems a bit late for July, he is probably a (first year) spike deer. 

 

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Round-leaf Orchid

 

Karen Pidcock guided me to a group of these orchids high on a mossy bank above the Kaslo river. I believe they are large round-leaf rein orchids, Platanthera orbiculata. (The small round leaf orchid is a different plant.) This is the the eighth local wild orchid I have photographed. It is also the first orchid I have seen that is pollinated primarily by moths and sports a nectar spur.

This wild orchid was apparently named for the two large roundish leaves at the base of its stem. The flowers grow as a raceme. The other oblong leaves in this picture are queen’s cups.

This is a closeup of a few of the flowers on the raceme. The landing strip for polinators is the labellum, the long petal hanging from the front of the flower. The pollinia are the two orangish pods at the top of the flower. This is discussed in greater detail with the next illustration.

Below is a detail from the centre left of the above picture. This orchid seems to be largely pollinated by a couple of species of noctuid moths, presumably having been attracted by a scent the orchid emitted at night. The moth would approach the illustrated flower from the left landing on the labellum (the landing strip). The moth must extend its long tongue deep into the nectar spur, which is also long to force the moth to press its head against the pollinia, which are then attached to the moth’s compound eye. The moth then carries the pollen to another flower.

There is an evolutionary process here which gradually increases the length of both the moth’s tongue and the nectar spur. The moths with the longest tongues are favoured as they can reach the bottom of the spur and so receive the most nutrients. The flowers with the longest spurs are favoured as their reproductive organs optimally press against the moth which then increases their reproduction. So, each slowly gets longer and longer.

 

Posted in wildflowers | 8 Comments

June goulash

 

This is a selection of June images none of which had a posting of its own. While not exclusively birds, there is certainly a preponderance of them.

Two Bald Eagle chicks still in the nest are scrapping over a bit of food.

No summer month would be complete without a shot of a hunting osprey. Picture courtesy of Cynthia Fraser.

Hover flies (a.k.a. flower flies) often mimic bees and wasps to avoid being eaten by birds. 

The Eastern Kingbird is a flycatcher. Here it is chasing something in the air.

I had not seen a heron do this previously. It vigorously shook to toss off something.

Mommy Common Merganser paddled by with her three chicks.

A Cedar Waxwing flew to a new feeding location on a black hawthorn tree. 

I have seen rather few Common Yellowthroats this season, but here is one.

A Tree Swallow looks out of a nest box.

A western garter snake wanders through the grass. It uses its extended tongue to sniff its surroundings. It looks as if it has just discarded its old skin everywhere except on its head. Picture courtesy of Cynthia Fraser.

This is a fledged robin chick. It has a spotted breast and wings flecked with white.

This year has brought us many Brewer’s Blackbirds. The male has yellow eyes and a glossy (almost liquid) black and midnight blue plumage.

Often shots of hummingbirds show the more spectacular male. This is a female Black-Chinned.

This Steller’s Jay looked right at me and squawked, as if to say: “Do something about these outrageously high temperatures!”

 

Posted in birds, bugs, herptiles | 7 Comments

Two dragonflies

 

It seemed a bit early to see the first dragonflies of the season, but there they were. And a welcome sight they were. These acrobatic aerial predators are especially partial to mosquitoes, flies, mayflies, midges, and gnats. If the insect flies, a dragonfly captures and eats it. A summer at the beach greatly benefits from the predation of dragonflies.

There are quite a few species of dragonflies. Here are two seen today.

Saffron-winged meadowhawk

Eight-spotted skimmer

 

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Crabbing season

 

The crabbing season has begun, so I went crabbing. 

Mind you, I am not talking about the crabs found in oceans, but the crab spiders found here (and elsewhere).

A crab spider is an ambush predator that waits patiently on a flower for its meal to arrive. Sooner or later, a pollinator — bee, fly, or ant — arrives at the flower. The spider then grabs the prey with its front legs and delivers a deadly dose of venom through its fangs. The venom’s effects are twofold: It paralyzes the insect, and it digests the insect’s insides. The spider then uses its fangs like a straw to drink the insect’s pre-digested insides.

Around here, daisies are favourite hangouts for crab spiders, however they are seen waiting for visitors on other flowers. 

In the morning a female crab spider (Misumena vatia) was stalking prey from a daisy.

In the afternoon, on a different daisy, a crab spider was feasting on a (mining?) bee.

 

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Heron preens

 

As wildlife contortionists go, few exceed the twists of the heron when it preens. It preens to repair its feathers and spread waterproofing oil on them.

The Great Blue Heron hunts for fish in Kootenay Lake year round. However, its numbers are greater in warm months. Further, its plumage evolves from juvenile to adult and from non-breeding to breeding season. The heron seen yesterday was an adult in its breeding plumage.

The white crown and black pigtail show this heron to be an adult. The orangish upper mandible and shaggy plumes on neck and back show it to be in its breeding plumage.

The heron seems to be acquiring oil from its preen gland on the base of its back. The oil is used to waterproof its feathers. The bird’s two shaggy plumes are clearly visible here.

The bill is used to preen most of its feathers.

However, the bill cannot be used to preen the feathers of the head, so a foot is employed.

 

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Bald, not Golden

 

Yesterday, a friend told me that she had just seen a Golden Eagle that was hunting by the lakeshore. I was assured that it must have been a golden as it was particularly large and brown. 

Hmm…, I was skeptical that a golden was what was seen. The problem is that a Golden Eagle didn’t quite fit the proffered description. Consider, a Golden Eagle: 

• prefers to hunt small mammals in the uplands, not fish at the lakeside
• a Golden Eagle is not particularly large, being slightly smaller than a Bald Eagle
• is brown, but so is a juvenile Bald Eagle, which does hunt over the lake
• can be distinguished from a bald by, among other things, it golden nape

Today, I visited the nest of a Bald Eagle, where its two (brown) chicks were holding court. When they fledge, they will appear larger than their parents for their feathers will not have been worn. However, they will lack the golden nape. 

Juvenile Bald Eagles are often misidentified as Golden Eagles, a result of being both brown and of wishful thinking.

Looking for an illustration, I visited a Bald Eagle’s nest and photographed two (brown) Bald Eagles chicks (and mommy) sitting on a nest.

 

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Raccoon feeder

 

The feeder wasn’t intended for raccoons. It is for birds, specifically finches.

Around humans, raccoons normally are nocturnal. Alas, the bird feeder is not left out at night, so a racoon kit has stopped by during daylight hours.

Kit: “This feeder is not well designed; The holes are a bit small for my hands.”

Kit: “I apologize for complaining about the design. Please don’t remove it. I’m hungry.”

 

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Local tigers

 

Almost simultaneously, the tigers have arrived. They are: a tiger beetle, a tiger butterfly, and a tiger lily.

I have commented previously, somewhat whimsically, on our rather odd naming conventions for species: butter sipping (on butterflies and buttercups); horned birds and insects; siskins and catkins. But, naming local things after tigers has got be one of the oddest. 

The tiger is the apex predator of an Asian cat family (felidae). It has orange fur with black stripes. So, why are local animals named after this distinctly alien species? 

Our Canadian tiger swallowtail butterfly won’t have been named for its predator characteristics. Maybe it is those black stripes, but the butterfly’s base colour is yellow, not orange (oops!).

The tiger lily is orange, but alas, the black embellishments are spots, not stripes. Now, that is a rather sloppy bit of naming.

The tiger beetle is certainly named, not for its appearance, but its predation. I have watched them within the week, but this is an earlier shot of two tiger beetles mating. Of course, the question could be posed: Why name this predator after tigers, as opposed to grizzlies or cougars? The province has quite a number of beetle species that are styled as tiger beetles.

Then there are moths. BC has nearly a dozen species of moths that are styled as tigers. This is one of them, presumably named because of the black stripes (against yellow) on its abdomen.

So, we have a few dozen species of various sorts that are named for a large Asian cat. Hmm, there does seem to be a certain linguistic bankruptcy among taxonomists.

 

Posted in bugs, wildflowers | 7 Comments

Eagle chicks

 

I visited the eagle’s nest at Cherry Bay to see how its two chicks were doing.

The two chicks appeared to be out of their down and sporting dark brown juvenile plumage.

The story became much more interesting when one of the chicks spread its wings in a practice flight exercise — although its flight feathers have yet to grow. Some of the earlier down is evident on the chick’s lower body. However, the fascinating thing was a display of the white rhaches (the feather shafts) of the proto-flight feathers which extended from each wing. The rhaches grow first and then the barbs extend from them and fill in the feather. Although these feathers are growing quickly, flight is still a while off for these chicks.

 

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