Naturespeak A naturalist's view of the world

March 9, 2014

Of Killer Sparrows and Husky Doves

Filed under: Uncategorized — wykes @ 4:34 pm

My previous posting being of a fishy nature, I’d like to briefly turn your attention to some feathered residents of Florida. I say briefly, because I’m not going to talk about the Pelicans and Ibises (Ibisii…Ibisisis or whatever you call multiple birds of the Ibis kind) until after we look at some more obscure things. This is not a birding blog. However (he says with a furled hypocritical brow) there were a number of “lesser” birds that captured my attention.

Northern migrants such as Yellow-rumped Warblers, Phoebes, and some Red-winged Blackbirds were everywhere in the Gulf Coast area around Tampa. It was nice to see them a few months earlier in the year than I am accustomed. Somehow they looked different in that sub-tropical setting – perhaps because they were not yet engaged in the stressful job of courtship and young-rearing. I won’t go so far as to claim that they were on vacation but admit to the possibility that they were wearing sun-screen and therefore had an unfamiliar appearance. I look forward to seeing their pale, stress-filled little selves when they return to Michigan.

A Butterbutt at Homosassa Springs

Phoebe at Crystal River

The crows flying about the region looked, at first glance, to be Common Crows but upon calling they uncorked a very different sound. Rather than “Caw, caw” they uttered guttural hi-lo “Uh uh” calls (like a scornful parent catching a child reaching into the cookie jar).  These were Fish Crows.  Smaller but otherwise nearly identical to the Common sort, Fish Crows spend most of their time around wetland habitats. Like their larger cousins they cluster into large flocks and generally make their presence known wherever one traveled along the coast.

Boat-tailed Grackles were another fascinating member of the blackbird family found within the sound range of the ocean waves. These nearly crow-sized grackles put our Common Grackles to shame (an odd thing to say about an already shameful bird!). They are so called because of the tremendous keel-shaped tail found on the males. I have to say, as grand as that tail was, it was their startling coloration that impressed me the most.

At Hudson Beach the male grackles were pumping up for courtship and displaying to each other in grand fashion. Resplendent – and I mean to imply the full glory of that word- in glossy purples, blues, and blacks they faced off with bills pointing skyward (see above and here). A pair of males directly over my head, on a lamppost, took turns puffing up, vibrating their wings and blinking at each other (see video here). Each blink flashed a white membrane over the eye and conveyed part of an overall message saying something like “Oh yeah, I’m am da best boid and don’t you’se forget it!”

Mixed in with the Boat-tails at Hudson Beach, steroid-pumped Mourning Doves cooed out their mantra – or so I thought. These boids…er, birds turned out to be Eurasian Collared Doves. I won’t insult your intelligence (any more than I already have) by explaining why they are called “Collared” or “Doves.” The “Eurasian” part indicates that they are foreign imports which became established in the Bahamas and quickly spread into Florida and northwest into the plains states. Their husky calls can only be described as the type of call you’d expect from a Mourning Dove the size of a city Pigeon. It is both comforting and annoying at the same time.

Personally, the Loggerhead Shrikes provided one of the more pleasant surprises of my visit. Had I been a competent birder, I would have researched things beforehand and discovered that these birds are very common in the south. I would also have been forewarned about the Collared Doves etc… Of course, I did not and thus I was surprised by every bird that revealed itself to me (call it the Babe in the Woods syndrome or B.W.S.). When a Loggerhead Shrike boldly perched before me on a fencepost during my very first venture into the neighborhood, I was delighted. They also put in an appearance at Fort Desoto.

As members of the song bird clan they appear like under-sized Mockingbirds but are, in fact, Killer Sparrows of a very different nature. Shrikes are predators. Oddly enough, they are only partially specialized for their task. Like their predatory club-mates the hawks and owls they have stout hooked beaks. Upon closer examination it can be seen that they have a notched beak tip like that found on members of the Falcon clan. Unlike other members of the predatory union, they do not have sharp talons or robust legs. In other words they are sparrows with hawk heads.

The large head is quite obvious on these shrikes. The name Loggerhead literally means “blockhead.” They tackle small to medium sized prey such as grasshoppers, lizards, small snakes and even mice with a push-over attack and some deadly bites (on the neck of vertebrates). They then carry their vanquished prey to the nearest barb-wire fence or thorn bush and impale them on one of the handy spikes for safe keeping. Images of Vlad the Impaler come to mind. The thorn, taking the place of talons, holds the prey as it is dismantled by the Shrike’s sharp beak.

My only regret was not locating one of these impaled victims during my stay. I have seen a Deer mouse so impaled by a Northern Shrike back up in my neck of the woods, so I can’t be too picky. Overall the lesser birds of Florida, even the Glistening Grackles of Greatness and Killer Sparrows, put on a good show well worth the admission price.

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