Scientific resources about chickens

Vitamin A is critical for differentiation of epithelial cells into cuboidal, columnar, or mucous-producing cells. Hypovitaminosis A, causes epithelial metaplasia and hyperkeratosi

CNEMIDOCOPTES MUTANS PDF - Cnemidocoptes gallinae, the depluming mite, the itch mite: worldwide. Cnemidocoptes mutans, the scaly leg mite: worldwide. Epidermoptes. 2,3 (also known

Mange is commonly seen in animals, but humans can develop this skin condition as well.

Sarcoptes scabiei or the itch mite is a parasitic mite that burrows into skin and causes scabies. Humans are not the only mammals that can become infected. Other mammals, such as wild and domesticated dogs and cats as well as ungulates, wild boars, bovids, wombats, koalas, and great apes are affected.

Learn about the veterinary topic of Mites of Poultry. Find specific details on this topic and related topics from the Merck Vet Manual.

Learn about the veterinary topic of Mites of Poultry. Find specific details on this topic and related topics from the Merck Vet Manual.

A number of insects, ticks, and mites attack poultry either by sucking blood or by feeding on the skin, feathers, or scales on the skin. Mites and lice are the most destructive external parasites of

Mites and poultry lice are a natural part of every backyard- they travel on birds, rodents and other animals, so when your chickens become infested, it does ...

Download scientific diagram | A simplified diagram of the action of the avian digital TLM: (1) digital extension, (2) digital flexion. This shows the movement of the talon (a), flexor (e) and extensor (d) tendons, ungual phalanx (b), and the movement of the ventrally located tubercle pad (f) relative to the stationary plicated sheath (g) and phalangeal bone (c). from publication: An ecomorphological study of the raptorial digital tendon locking mechanism | Extensive adaptive radiation in hindlimb design among raptors is well known. However, the degree of variation in the structure and expression of the digital tendon locking mechanism (TLM) and its adaptive significance have received little attention. This comparative... | Ecomorphology, Tendons and Digital | ResearchGate, the professional network for scientists.

Representatives of all avian orders were studied in order to establish that the tendon-locking mechanism (TLM), consisting of local specialization of the flexor tendons and the adjacent portion of the flexor tendon sheath, is by no means rare, but rather, constitutes the prevalent condition in a large majority of the avian species sampled. The areas of tubercles on the tendons and the adjacent sheath plications intermesh with one another thereby forming a true tendon-locking mechanism that maintains the distal and other interphalangeal joints of the digits in the flexed position. The TLM seems to function not only in perching, but in a wide variety of other activities of the avian foot including swimming, wading, prey-grasping, clinging, hanging, and tree climbing. The basic structural components of the mechanism are remarkably similar in the divergent avian groups adapted for these activities. Ultrastructural detail of the TLM was studied by means of scanning and transmission electron microscopy. Interdigital variation in distribution of the TLM in all of the digits of individuals were made as were comparisons of the interspecific distribution of the TLM. An analysis of the biomechanics involved in engaging the elements of the TLM and how they produce locking of the flexed joints of the digits includes a consideration of the roles of the podothecal pads, ungual flexor processes, and the elastic flexor and extensor ligaments of the toes. The components of the TLM are differentiated in early fetal development establishing that the TLM components are not acquired adventitiously in response to such factors as posthatching mechanical stresses.

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The provision of perches in housing systems for laying hens is meant to improve hens’ welfare by allowing a more natural behavior repertoire. However,…

Providing an inadequate poultry perch for your chicken to roost on can create its own set of health issues. Learn why a 2 x 4 isn't the perfect perch.

Two experiments were conducted to determine the shape and size of roost preferred by broiler breeder hens. The effect of roost position upon roosting …

What can I use for chicken perch? A chicken roost is a place where birds regularly gather to rest or sleep. The most common material used is wood. Generally a 2×4 inch piece of wood laid wide side up is perfect. Your roosts will need to be strong and stable. Another common problems with roosts … What can I use for chicken perch? Read More »

Passeriformes, or perching birds and songbirds, are an order of birds that includes crows, jays, starlings, wrens, cardinals, finches and many other species. It has been suggested that these birds are able to passively perch due to a tendon locking mechanism. This allows them to rest for hours in trees without falling. When the bird's foot is placed on a perch, the weight of the bird causes the tendons to pull, thus closing the toes around the perch. However, there is currently much debate about whether the mechanism is entirely passive. Recent studies argue that the mechanism must be coupled with the active contraction of muscles. This study seeks to determine whether or not the perching mechanism in Passeriformes is passive through the analysis of morphological parameters of window-strike birds. Specifically, we looked at the angular changes of the toes as well as the distance between opposing toes, both when the foot is flexed and extended. Preliminary analysis of our results indicate decrease in many of the measured angles and distances as the foot changes from the extended to flexed position. Since this data was collected on dead birds, this suggests that the perching mechanism is in fact passive.

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When I first started looking into whether or not I should use sand for my coop, I found these two opinions: Sand is the best bedding out there, and you are making a huge mistake if you use anything else for your chickens Sand is the worst bedding out there, and you are a monster if you use it

Nestera knows what your flock wants when it comes to comfortable roosting. Read our latest blog to discover the best size and shape perch for chickens.

Hoop Coop Guide Master Materials List 2- 4"x6"x16' 12- 2"x6"x10' 5- 4"x4"x6' 15- 2"x4"x8' 5- 52" Combo/Cattle Panels 2- 48"x50' ½"x ½" Rolls of Hardware Cloth (3 rolls recommended) 3- 1lb. Boxes of 1 ½" Galvanized Fencing Staples 2 ½ lbs. of...

Aart's Hoop Coop / Chicken Tractor I've always been intrigued by the livestock panels as a structural material for a coop, and love the curved Quonset hut type imagery. Also like the idea of a chicken tractor to spread their industry and...

Hummingbirds are territorial and will use this swing as a perch to watch over their food source. Simply place this swing near hummer feeders and enjoy watching them sit and swing! Metal Durable and attractive Will not rust or rot Imported 0.15" D x 9.25" W x 9.50" H

Hey, guys. I have a five month old chicken that isn’t walking. He was fine Saturday and then all of a sudden, he was walking on his hawks and then not at all. His feet are curling and he can’t control his legs below the hawk. He can sit up on them but he’s very shaky when he does. We’ve been to...

Leg splints for chickens