And it isn't just habitat and conservation scientific reports that have been bent to serve the grant master, it's in medical research, too, among other fields of study poluted by greed and laziness and dishonesty.
So, tell me how I can access the studies you cited in Biological Conservation and Condor that you feel are well done and I will read them and check their materials and methods, but I'm not going to bother to read a textbook written in the era of political correctness.
I'm in a rural area, and the nearest scientific library that might carry these journals is a three hour drive from here, which is impossible in my present state of health.
P.S. I helped save the condors, as a contributor to the San Diego Zoo, so I care about wildlife, but I am not interested in being hustled by poorly done scientific studies.
Charles Krebs book is in its fifth edition: the first appeared in 1972. He is one of the most respected and talented ecologists in the world. "Poorly done" studies don't get into a book like this, but I guess, in the eyes of some, he is now tainted by association, just like accountants and priests.
Does your local library have an inter-library loan facility? If so, you should be able to get copies of the papers through them. Or else, look up the journal or authors' web pages and write to the authors for copies.