Birds have different feeding habits depending on the stage of life and availability of food. Their bills and tongues are adapted for different diets, like woodpeckers having barbed tongues for extracting grubs from trees. Feeding habits can be harmful if birds damage crops or fisheries in large flocks, though birds of prey have minimal impact on livestock or game populations despite being mistakenly blamed. High metabolism requires constant feeding for energy needs.
When a perfectly harmless animal resembles in its colour and shape, with a well protected species, the phenomenon is called mimicry.
The concept of mimicry was first given by H. W. Bates in 1862.
Mimicry is an important feature of organism which protect the animals against enemies. Mimicry often used as self defense which increases the survival value of organisms.
Mechanics and Classification of birds migration along with the needs to migrate. it is helpful to learn the mechanics involved in migration specifically elaborating the roles of environmental factors to force the birds to migrate.
When a perfectly harmless animal resembles in its colour and shape, with a well protected species, the phenomenon is called mimicry.
The concept of mimicry was first given by H. W. Bates in 1862.
Mimicry is an important feature of organism which protect the animals against enemies. Mimicry often used as self defense which increases the survival value of organisms.
Mechanics and Classification of birds migration along with the needs to migrate. it is helpful to learn the mechanics involved in migration specifically elaborating the roles of environmental factors to force the birds to migrate.
its all about respiratory system of insects, arrangement and position of spiracles system. Types of different respiratory systems in aquatic insects.
Contact Email: mzeeshan_93@yahoo.com
Through the process of evolution, few species of reptiles were transformed into modern birds.
This ppt describes about the similarities between reptiles and modern birds.
ppt on flight adaptation
a well prepared ppt on the topic of bird's flight adaptation.
a good collaboration of knowledge on this topic , hope all of you like this
plz like and share if you like it
These slides contain short definitions and history of systematic zoology and taxonomy. The information in slides is taken from 2-3 taxonomy books and lectures from university at master level.
TO FOLLOW THESE SLIDES you will learn about the adaptive radiations involve in evolution .
yo will learn about the parallel adaptations and its types
speciation role in the evolution
factors
key innvations
to imrove the article involving examples
Founder events
Adaptive plasticity
process of adaptive radiation
Factors promote adaptive radiations
Factors underlying adaptive radiations
defined by 0.S OSBORN
ecological space
geological
climatological
Islands
examplrs: 1.Darwin Finches 2.Cichlid fish genome -adaptive evolution, Stanford scientists
3.Anolis Lizards
Factors promote adaptive radiations
1.Generally speaking, adaptive radiations occur when new, unoccupied ecological niches become accessible to a founder population.
This can happen after a mass extinction during which the previous occupiers of those niches died out.
t can also happen when a colonizing species arrives at an island. (For instance the ancestor of the honeycreepers in Hawaii, or of Darwin's "finches" in the Galapagos)
Honey creeper
Change feeding habitat
At least 56 species of Hawaiian honeycreepers known to have existed, although all but 18 of them are now extinct.
Lack of competition. When a species enters an adaptive zone, it is poorly equipped to compete with species that have become adapted to the same niche.
For example, mudskippers are fish that are making a living on land, but they are marine fish and they don't have to compete against frogs and salamanders, which are restricted to fresh water. That is why we don't see freshwater mudskippers.
process of adaptive radiation
Ecological Release Colonization of species.
Taxon cycle
Habitat varying as population expand- species dispersal.
Adaptive plasticity Phenotypic plasticity(behavior change)
Property of an individual or genotype that may be adaptive, maladaptive or neutral with regard to an individual's fitness.
The particular way an individual's (or genotype's) phenotype varies across environments can be described as a reaction norm (Single genotype-phenotypic expression)
Speciation in adaptive radiation Founder events
Feathers and Appetites_ Exploring What Do Ducks Eat.pdfBusinessnewspark
Ducks are fascinating and versatile waterfowl that can be found in a wide range of habitats around the world. Whether you spot them gracefully gliding across ponds or waddling on land, understanding what ducks eat is key to appreciating their dietary preferences and supporting their natural behaviors. In this article, we will explore what do ducks eat and gain insights into their feeding habits
its all about respiratory system of insects, arrangement and position of spiracles system. Types of different respiratory systems in aquatic insects.
Contact Email: mzeeshan_93@yahoo.com
Through the process of evolution, few species of reptiles were transformed into modern birds.
This ppt describes about the similarities between reptiles and modern birds.
ppt on flight adaptation
a well prepared ppt on the topic of bird's flight adaptation.
a good collaboration of knowledge on this topic , hope all of you like this
plz like and share if you like it
These slides contain short definitions and history of systematic zoology and taxonomy. The information in slides is taken from 2-3 taxonomy books and lectures from university at master level.
TO FOLLOW THESE SLIDES you will learn about the adaptive radiations involve in evolution .
yo will learn about the parallel adaptations and its types
speciation role in the evolution
factors
key innvations
to imrove the article involving examples
Founder events
Adaptive plasticity
process of adaptive radiation
Factors promote adaptive radiations
Factors underlying adaptive radiations
defined by 0.S OSBORN
ecological space
geological
climatological
Islands
examplrs: 1.Darwin Finches 2.Cichlid fish genome -adaptive evolution, Stanford scientists
3.Anolis Lizards
Factors promote adaptive radiations
1.Generally speaking, adaptive radiations occur when new, unoccupied ecological niches become accessible to a founder population.
This can happen after a mass extinction during which the previous occupiers of those niches died out.
t can also happen when a colonizing species arrives at an island. (For instance the ancestor of the honeycreepers in Hawaii, or of Darwin's "finches" in the Galapagos)
Honey creeper
Change feeding habitat
At least 56 species of Hawaiian honeycreepers known to have existed, although all but 18 of them are now extinct.
Lack of competition. When a species enters an adaptive zone, it is poorly equipped to compete with species that have become adapted to the same niche.
For example, mudskippers are fish that are making a living on land, but they are marine fish and they don't have to compete against frogs and salamanders, which are restricted to fresh water. That is why we don't see freshwater mudskippers.
process of adaptive radiation
Ecological Release Colonization of species.
Taxon cycle
Habitat varying as population expand- species dispersal.
Adaptive plasticity Phenotypic plasticity(behavior change)
Property of an individual or genotype that may be adaptive, maladaptive or neutral with regard to an individual's fitness.
The particular way an individual's (or genotype's) phenotype varies across environments can be described as a reaction norm (Single genotype-phenotypic expression)
Speciation in adaptive radiation Founder events
Feathers and Appetites_ Exploring What Do Ducks Eat.pdfBusinessnewspark
Ducks are fascinating and versatile waterfowl that can be found in a wide range of habitats around the world. Whether you spot them gracefully gliding across ponds or waddling on land, understanding what ducks eat is key to appreciating their dietary preferences and supporting their natural behaviors. In this article, we will explore what do ducks eat and gain insights into their feeding habits
Food variety ,Food materials and sources ,What do other animals eat? ,Plant parts and animal products as sources of food ,Herbivores, carnivores, omnivores
Carbohydrates, fats, proteins, vitamins, minerals, fibres, their sources and significance for human health
Balanced diet; diseases and disabilities due to food deficiencies.
Types of Changes ;Physical and chemical changes;Factors affecting changes ;Solubility and factors affecting it
Balanced diet; diseases and disabilities due to food deficiencies.
Magnets,Magnetic and Non-magnetic Materials, Poles of a magnet, Directions using poles of a magnet,
Making a artificial magnet , Attraction an repulsion between magnets,
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Unit 8 - Information and Communication Technology (Paper I).pdf
Nutrition in birds
1. • Birds are grouped on the basis of their feeding habits.
• Birds may eat different kinds of food at different stages in their life history.
• For example. Robins feed largely on worms and other invertebrates when
these foods arc available. Robins may feed on berries ( fruits like tomato) in
the winter.
• They can change their diets according to availability of food
• The feeding habits of some birds are harmful to man.
NUTRITION IN BIRDS
2. • Birds damage orchard and grain crops. Millions of
birds arc collected in local area due to flocking and
roosting habits in some birds.
• They destroy fields of grain.
• Birds of prey have minimum impact on populations
of poultry and game birds and on fisheries. It has
been mistaken though that they are responsible for
these loses. Thus human are killing them by poison
or shooting them
3. • Birds feel great appetites. This appetite support a high metabolic rats.
• High metabolic rate is necessary for endotherm and flight.
• For example, humming birds feed during the day. But they can’t maintain
metabolism at night. Therefore, they become torpid at night.
• They reduce temperature and respiration rate. They again become active and
feed in the morning.
4. Bill and tongue
• The bills and tongues of birds are modified for different feeding habits and
food sources.
• The tongue of woodpecker is barbed. It is used or extracting grubs (larvae of
insect) from the bark of trees.
5. • Sap suckers dig holes in trees. It uses a brush like tongue for licking
the sap from the holes.
• Hummingbirds are nectar feeders. Their tongues roll to form a tube
for extracting nectar from flowers
